Otterbox 20,000 mAh Fast Charge Power Bank. 20k power bank

Otterbox 20,000 mAh Fast Charge Power Bank

A good battery pack is essential these days. Everything from phones to gps to headlamps to cameras and radios are now recharged by USB.

Otterbox have been in the phone accessory game a long time make some of the toughest cases on the planet. If you need a supertough, waterproof case for your phone, you get an Otterbox case.

In 2017 they used their plastic expertise to make some of the nicest backpack and hard-sided coolers you can buy. The hard coolers rival Yeti with their ice-keeping and production quality.

They’ve expanded their product line again to electric phone accessories with cords and battery packs. They now have 10,000, 15,000 and 20,000 mAh battery banks. The Fast Charge Qi Wireless Power Bank comes in 10k and 15k mAh sizes with a Qi wireless charging pad on top.

This review is about the 20,000 mAh Fast Charge Power Bank without the Qi charging pad.

The Fast Charge Power Bank has three different sizes: 10,000, 15,000 and 20,000 mAh. The iPhone 12 has a 3,687 mAh battery in it so you’ll get more than 5 charges with 20k mAh.

It’s not just for phones though, it can be used to charge anything that can be charged by 18W USB. It won’t charge MacBook Pro computers but it works well for anything smaller like tablets, phones, cameras and drones. With new drones like the DJI Mavic Mini 2 coming with USB charging built in or portable charging stations, it’s easy to charge on the move.

It takes about 4 hours to fully charge. Some chargers are faster than others. Directly connected to the wall with a fast charger will charge the fastest. Just plugged into a computer will take longer.

The 4 LED lights indicate how charged it is. One click and it shows you the lights and the current charge level.

It has 2 ports, 1 USB-C and 1 USB-A port. Both can charge at 18 watts output.

2 18W ports – 1 USB-C, 1-USB-A

Spec List

4 LED charge lights

otterbox, fast, charge, power, bank

What I like

Feels and looks good

The power bank is the best looking power bank I’ve seen. Most are simple plastic or are made with slippery materials with no attention to the details. The faux-leather material on the Otterbox feels amazing and is easier to hang on to, and won’t slide around much on a dash.

Sturdy

Most power banks are fragile electrics. One drop and it’s toast. Otterbox builds their products tough. I’ve already dropped a few times accidentally and it looks brand new and works great. This makes it a bit heavier than other power banks but it will likely last longer being chunked in a backpack.

18 watts with Power Delivery output

Most small chargers only do 5 to 10 watts which doesn’t charge bigger devices like some cameras and tablets. 18 watts does a good job with all the smaller devices until you get to the larger laptops.

What I don’t like

Only 18W output

18W charging can power plenty of smaller devices but it’s not not quite enough for bigger laptops. I tested the Otterbox a 15′ MacBook Pro and while it did help power the laptop, it wasn’t gaining any ground. It might be able to increase the battery while asleep but in use it just slowed the decrease.

Can’t fast charge with both ports

The fast charge only works with one thing plugged in. It would be nice to see both ports fast charge. 1 is still great though but you just have to be aware that it won’t fast charge 2 phones at the same time.

Sturdy case withstands small drops no problem

Who is this good for?

Folks on the go a lot who need a bigger power bank. If you are constantly using a small laptop, tablet or camera and running out of juice, this is a great power bank to get. The 18W charge keeps up with tablets and bigger cameras that demand more power.

Being on the larger and heavier side, you probably won’t take it ultralight backpacking but with everything USB powered these days, the 10k version is smaller and lighter and could easily fit into your backpack to help charge your headlamp, GPS, and phone on the trail.

The 6 best small power banks

Whether you’re away from home for travel, work, or play, the best small power banks can keep your go-to devices charged without taking up precious space. They come in a range of battery capacities and compact sizes (some are tiny enough to stash in your ), so you can find a model that best suits your needs.

Broadly speaking, a power bank’s size is related to its electrical capacity, which is measured in milliamp hour (mAh). In small models, power bank capacity can range from 5000mAh to over 25000mAh — the higher the mAh, the more times the power bank will be able to charge your device. Keep in mind, though, that you’ll get fewer charges for bigger electronics like laptops and more charges for simpler devices like smartphones. Of course, the power bank itself must first be charged before it can power your devices, and the larger the capacity, the longer this can take. Essentially, you’ll be looking at a charging time of 2.5 to 12 hours, depending on battery capacity. At minimum, you’ll want a power bank that can charge a smartphone completely, with extra battery to spare.

As far as portability, large-capacity power banks are about the size of a smartphone, but if that’s more room in your desk or bag than you’re willing to spare, you can opt for slim, lightweight styles that are small enough to stick in your Note, however, that compact power banks are best saved for quick boosts rather than multiple full charges for different devices, as the mAh will be lower.

In general, small power banks come with one or two USB output ports, so think about how many devices you want to charge. While most small power banks come with the micro-USB cable required for charging them before you head out, in most cases you’ll need to supply the wall plug, as well as your device’s charging cable.

otterbox, fast, charge, power, bank

After diving deep into power bank reviews and comparing sizes and specs, I’ve rounded up the best small power banks below, so you can charge your device in a pinch.

The overall best

Boasting an ultra-high 4.7-star overall rating after more than 67,000 Amazon reviews, Anker’s PowerCore 10000 power bank has a capacity of 10000mAh and one of the smallest footprints on this list — more compact than a deck of cards. According to the brand, it can supply an iPhone X with 2.4 charges, an iPhone 8 with 3.6 charges, and a Galaxy S9 with 2.2 charges. When the power bank itself needs to be charged up, you can get a full battery in about 4.7 hours. It has a single USB port for charging one device at a time and four small LED lights that display the percentage of power remaining. Included with the power bank are a micro-USB cable and a travel pouch, but you’ll need to supply your own cable if your device requires a different hookup. Weighing just 6.35 ounces, it offers the best combination of power, portability, and reviewer approval.

A reviewer wrote: “I have to say I am genuinely impressed with not only how well it worked but how FAST it charged my iPhone XR! I was not expecting it to charge so quickly, I had about maybe 10% or so left, plugged it in, and within about maybe 30-45mins. maybe an hour or so I had a completely full charge! And the power bank still had enough for I believe another 2 full charges to go.”

The runner-up

Also from Anker, the PowerCore 5000 has a cylindrical design that’s a bit bigger than a roll of breath mints, making it a highly portable power bank option. Designed with a single port, it can power up one device at a time, and according to the brand, the 5000mAh capacity can supply an iPhone X with 1.3 charges, an iPhone 8 with 1.8 charges, and a Galaxy S9 with 1.1 charges. The power level is indicated by three small LED lights, and a micro-USB cable and pouch are included. When the power bank runs out of battery, it’ll take approximately 2.5 hours to recharge it.

A reviewer wrote: “Use it for compact charging (purse or ). I own a larger Anker model which is also great but you can’t beat this for the compact dimensions. Highly recommend for easily carrying around.”

The best for charging 2 devices simultaneously

With a capacity of 20000mAh and two output ports, Anker’s PowerCore Essential 20K power bank can charge two devices simultaneously — and it’s earned a near-perfect 4.8-star overall rating after 48,000 reviews, making it a top pick for a multi-device power bank. There’s a micro-USB output port and a USB-C output port, and when used as a charging solution for a single device, it can provide an iPhone XS with five charges, an iPhone 11 with four charges, a Galaxy S10 with almost five charges, and an iPad mini 5 with 2.5 charges. The power bank itself recharges within about 10 hours, and the battery level can be checked by pressing a button. Though it weighs considerably more than some of the other power banks here, it’s about the size of a smartphone, and each unit is drop tested from 1 meter to ensure durability.

A reviewer wrote: “This is the third Anker portable charger I have purchased and again I am happy with this. I like the dual charging port feature, I can charge two phones or a phone and a tablet at the same time. The charging time is fast! And with the portable fully charged I can use this for days before recharging it again. I always take this with me whenever I go on trips- always good to have a reliable portable charger handy! Definitely recommend this.”

The best power bank with a digital display

With INIU’s portable power bank, checking your battery level is as simple as glancing at the numerical LED readout. Another powerful option, the 20000mAH capacity power bank can be used to fuel accessories and devices of all sizes, and it can supply a Galaxy S20 with 3.4 charges, an iPhone 13 with 4.3 charges, and an iPad mini 4 with 2.7 charges. It has two output ports plus a USB-C input/output port, which means you can charge up to three devices at once. Of course, with that kind of power capacity, you’re looking at a power bank that’s a bit bigger and heavier than other options featured on this list. That being said, there’s a built-in flashlight for even more convenience. This pick recharges itself via an included USB-C cable, with a charge time of about 12 hours, according to a reviewer.

A reviewer wrote: “We took this camping, and it held a charge for days. We were able to charge our phones several times. The percent power display was incredibly useful. Highly portable and TSA compliant.”

The most battery capacity

If you’re looking for the most charging power, Ekrist’s high-capacity power bank can hold 25800mAh, which the brand claims is enough to fully charge any smartphone four to eight times and an iPad Pro two to three times. While this number will vary between manufacturers and devices, one Galaxy 8 owner that reviewed the Ekrist claimed that 50% battery capacity remained after charging their device four times. The power bank has two USB output ports and one micro-USB input port, and it comes with a micro-USB cable. When it’s time to re-up the battery, it’ll take about eight to 10 hours to recharge the power bank.

A reviewer wrote: “I’ve owned this less than a month and it has quickly become a necessity in my daily life; fitting nicely into the side of my backpack. The value for what you’re getting is well worth it when compared with other models that are older, more expensive, and less mAh. Average battery cycle will give me multiple full phone charges and only needs a charge about once a week, give or take.”

The best solar power bank

If you’ll be away from a reliable power source or want a backup in case the electricity goes out at home, this is the best small solar power bank to help keep your devices charged. It has a capacity of 12000mAh, which can be charged up quickly via USB-cord (best for regular use), but you can also rely on the solar power function as a backup in a pinch or to top it off as needed. (Keep in mind, also, that smaller solar panels like the one found on this unit mean the power bank itself will charge more slowly in the sun, so you’re trading some power for the compact size.) The brand states that the power bank can charge five devices simultaneously, and it has four built-in cables: a USB cable, a micro-USB cable, a type-C cable, and a Lightning cable.

According to a reviewer, when fully juiced, the power bank can charge an iPhone SE three to four times, but the brand doesn’t give details on how many times it can charge any other phone or tablet models. Note, also, that there’s no mention of how long it takes to fully charge the power bank via wall outlet or solar power.

In addition to its functionality as a charger, the bank features an LED that works as a small flashlight.

A reviewer wrote: “This is a great little charger. It charges fairly quickly via USB cable and has the added benefit of solar charging when stuck in a rut. This feature makes it great for travel. Its a nice compact size and it comes with four handy cables already attached. I can hang it on my backpack while hiking and it’ll charge. I can leave it on my cars’ dashboard while driving and it’ll charge. When I’m sitting at home and I’m too lazy to plug it in to the wall, I just place it near a window and it charges. Solar charging isn’t very quick but its definitely a nice addition!”

The best 20,000mAh power banks you can buy

A power bank is a great way to keep your devices charged while away from an outlet. You can get smaller portable batteries with 5,000mAh and 10,000mAh capacities, but those with 20,000mAh will last you longer and should charge your device several times. Here are our recommendations for some of the best 20,000mAh power banks you can currently get your hands on.

Best 20,000mAh power banks

Editor’s note: We will continually update this list as new 20,000mAh power banks are announced.

Anker PowerCore III

The Anker PowerCore III is a popular 20,000mAH power bank with a reasonable variety of ports: two USB and one USB-C. It can charge at speeds of up to 20W and is Qualcomm Quick Charge-enabled.

Anker is a super producer of charging devices, and this power bank is equipped with the Anker MultiProtect safety system. An 18-month manufacturer warranty adds extra peace of mind, and it’s available for 60 or less.

Anker PowerCore Essential

Anker has several 20,000mAh power banks, but one notable option is the PowerCore Essential. The battery features a USB-A port for output, along with a USB-C port for input and output. Thanks to support for Power Delivery, the USB-C port delivers up to an 18W output.

Anker’s pedigree and fast-charging capabilities are already good enough, but you can grab an 18W wall charger to juice the power bank to 100% in under seven hours. Also, keep in mind you can use it to charge other USB-C devices, such as tablets, smartphones, and even certain laptops.

Romoss 20,000mAh power bank

If you’re looking for a 20,000mAh power bank that doesn’t lack in the port selection, look no further than Romoss’s offering. The battery features three USB-C ports (two for output, one for input) and two USB-A ports (one for input, one for output). It’s a perfect companion if you’re hoping to charge your whole group’s devices on the go.

The battery supports Power Delivery, so you can top out at 18W output for the USB-C port. You can also check the small LED display to see the battery percentage, charging current, and charging voltage at a moment’s notice.

Crave Plus Pro portable charger

Crave’s Plus Pro portable charger is a three-port option equipped with Fast Charge IC 3.0. Two ports are USB-A, and the third option is a USB-C port with Power Delivery for up to 45W of charging. The power bank itself is only about the size of an average smartphone, so you should have no trouble stashing it in your backpack or even a

Once your Crave Plus Pro runs out of charge, use the USB-C input port to get back to full speed in a hurry. At just about 100, the Crave Plus Pro isn’t the cheapest option on the list, but three ports are a huge plus when charging.

Mophie Powerstation XL

At first glance, the Mophie Powerstation XL is a by-the-numbers portable battery. There are two regular USB ports and a USB-C port for input and output. The port selection isn’t varied, but at least the USB-C port can output at 15W.

Where the Powerstation XL differs from the competition is in material choice. The fabric material on the top and bottom is soft to the touch, even if you might need to clean it from time to time.

At around 60, the Powerstation XL is a bit more expensive than a few other options. However, it’s a straightforward 20,000mAh power bank that doesn’t try to be more than that. For some people, that’s enough.

Baseus 65W Power Bank

Baseus is a titan of the charging industry, and in the 65W charger, you’ve got a powerhouse on your hands. Equipped with one 65W PD USB-C port and two 30W QC USB-A ports, the power bank is a great option for juicing laptops and phones alike.

A numerical LED charge indicator gives you a more precise idea of how much more power can be squeezed from the device, and the 65W capability means that the power bank itself can be refilled in just two hours.

Omnicharge Omni 20 Plus

If you’re looking for a truly all-in-one portable battery, look no further than the Omnicharge Omni 20 Plus. In addition to the two regular USB ports, the Omni 20 Plus features a USB-C port for input and output. Thanks to Power Delivery, the USB-C port delivers up to 60W of output and 45W of input.

If you need even more power, the Omni 20 even features an AC outlet with 100W output. That means you can charge the 15-inch MacBook Pro at full speed. As if that wasn’t enough, the Omni 20 Plus delivers up to 10W of wireless charging output.

Finally, the small OLED display shows how much charge is left, how much wattage the Omni 20 Plus is outputting, and the estimated amount of time left until the battery dries up.

The Omni 20 Plus is also very heavy, even for a 20,000mAh portable battery. However, this is one of the most powerful options out there.

That’s it for our list of the best 20,000mAh power banks available. We’ll update this post with more options once they are released.

The Best Power Banks of 2023

We tested power banks from Nitecore, Goal Zero, Anker, and more, to help you find the best model to keep your phone, tablet, laptop, or other gadgets charged.

The BioLite PD power bank in action on a camping trip in Tennessee; (photo/Honey McNaughton)

In 2023, nearly every gadget and gizmo that we use has a battery. Our phones are the primary example, but nearly everything — from headlamps to headphones — has built-in rechargeable batteries.

As a result of our rechargeable world, portable power banks have become a standard part of everyday life. When traveling, power banks offer convenient on-the-go charging that eliminates the need to hunt down an outlet. For outdoor enthusiasts, compact power banks go along on every camping trip, thru-hike, and bike-packing journey.

In recent years, power banks have improved exponentially. As we all grow increasingly reliant on our electronic devices, power banks have become smaller, lighter, and more capable than ever before.

To compile this list of the best power banks, we combed the market for the most popular, innovative, and well-regarded models — and then conducted extensive testing at home and in the field to determine the best model for every need and budget. We charged phones, cameras, laptops, and even other power banks. We dropped and lightly abused over a dozen models to determine durability and longevity. In the end, we were left with a clear understanding of which models are worth their weight and price tag. These are the best power banks on the market today.

To learn more about what to look for when purchasing a power bank and our rigorous testing process, check out our comprehensive Buyer’s Guide, Comparison Chart, and FAQ sections below.

Nitecore NB10000 Gen II

Pros

  • Impact-resistant and generally durable
  • Lightweight with a thin profile
  • Charges quickly
  • Low-power setting for sensitive devices

Cons

Now in its second generation, the Nitecore NB100000 (60) is a lightweight, no-frills power bank that seriously impressed during testing. This minuscule unit is one of the smallest 10,000 mAh banks on the market. It fits easily in any. and it weighs just over 5 ounces — excellent stats for a power bank that fully charged an iPhone 13 to 100% two and a half times — exactly as the brand claims.

The NB10000 isn’t the most heavy-duty or luxurious power bank on the market, but it simply performs well in every category without any major flaws or weaknesses. Sure, the battery power indicator light isn’t the most precise, but that’s a nit-picky criticism in a compact power bank. Ultimately, the NB10000 provides reliable portable power for charging small devices.

Our 2-foot drop test didn’t leave a scratch on the Nitecore’s carbon fiber exterior, so we especially recommend this power bank for outdoor use. It’s light and packable enough for ultralight thru-hiking, and it contains enough power to keep a phone charged for quite a long time — depending on phone use, of course.

Compared to the first generation of the NB10000, the second generation offers increased USB-C output for faster charging. It also has a “low current mode,” which is useful for sensitive devices with small batteries such as Smart watches and Bluetooth earbuds.

If you need to charge two devices at once — the NB10000 has you covered. Additionally, it has “pass-through charging,” which allows users to tap into the NB10000’s outputs while it is plugged into a wall outlet.

Charmast 10400 mAh Power Bank

Specs

  • Capacity 10,000 mAh
  • Weight 6.6 oz
  • Size 3.56 x 2.44 x 0.87
  • Outputs USB-A (2x), USB-C (1x)
  • Inputs Micro USB, USB-C
  • Included cables USB-A to USC-C, USB-A to micro USB

Pros

  • Versatile charging configuration
  • Good value
  • Compact
  • The power bank itself recharges quickly

Cons

For 23, this.sized Charmast power bank is an excellent affordable option for recharging small devices around the house and during weekend getaways. Sure, there are less expensive power banks of this size on the internet, but this one actually works and has great quality for the price.

With two USB-A outputs plus an in/out USB-C and a micro USB output, this Charmast works with all sorts of cables. It can theoretically charge up to three devices at a time, though it will drain very quickly under that kind of strain. During our testing, it delivered power to headphones, smartphones, and smartwatches in a timely fashion. It pumped an iPhone 13 from 0 to 100% and again from 0 to 92% in a single full charge. Compared to similarly-sized power banks, the Charmast reloads quickly when plugged into a wall outlet with its included cable.

Though this unit is a bit bulkier and heavier than our top overall pick, it still fits easily into a without fuss. The plastic casing doesn’t boast any listed waterproofing stats, but it held up perfectly well to our drop test with only minor scuffing.

Goal Zero Sherpa 100PD

Specs

  • Capacity 25,600 mAh
  • Weight 1.5 lbs.
  • Size 7.7 x 3.81 x 1
  • Outputs Wireless, USB-C (1x)
  • Inputs USB-A (2x), USB-C (1x)
  • Included cables 39 USC-C to USB-C cable

Pros

  • Powerful enough for charging laptops and tablets
  • Durable casing
  • Wireless charging

Cons

During our testing for this roundup, we focused primarily on compact.sized power banks in the 10-20k mAH range. Though these small devices are great for charging small devices on the go, they aren’t suitable for larger devices like laptops.

The Goal Zero Sherpa 100PD (199) is larger than most power banks on this list. It weighs 1.5 pounds, and it won’t fit in a That said, it’s still relatively compact, and it’s the perfect choice for airline travel or car camping, especially when a charged-up laptop is essential.

Compared to the smaller banks we tested, the Sherpa boasts several significant upgrades. First, it offers wireless charging. Just set a compatible smartphone or another device on the charging pad and it’ll power up sans cable.

A small display screen keeps the user informed on outgoing wattage, remaining battery life, and more. It’s far more informative than the standard series of indicator lights that most small power banks have.

The Sherpa charged an iPhone 13 from dead to 100% a whopping seven times using a USB-C to USB-C cord. The brand advertised eight full charges, but this figure depends on many variable factors. In any case, the Sherpa is about four times more powerful than most 10k mAh power banks in this regard. Using the wireless charging surface, the phone fully charged in about 100 minutes.

The Sherpa fully charged a MacBook Air over two times before it ran out of steam — more than enough for a weekend of off-grid computing.

Dark Energy Poseidon Pro 10200

Specs

  • Capacity 10,000 mAh
  • Weight 9.6 oz.
  • Size 6 x 3.25 x 0.63
  • Outputs USB-C (1x), USB-A (1x)
  • Inputs USB-C (1x)
  • Included cables 3′ USB-C to USB-C cable

Pros

  • Extremely durable
  • Built for extreme conditions
  • Waterproof and fully submersible

Cons

In terms of durability, the Dark Energy Poseidon Pro (120) is miles ahead of nearly every other power bank. According to the brand, it can be fully submerged in water for up to 45 minutes, frozen for four weeks, and dropped from 75 feet in the air. Though we didn’t test these bold claims exactly, we used and abused the Poseidon Pro for several weeks, dropping it in the snow, tossing it loose into a backpack, and making no attempt to protect it from harm. It continues to look and perform like new.

This power bank’s bulletproof nature does come with a slight weight increase. It’s about 3 ounces heavier than other power banks with comparable capacity. Still, that’s a small price to pay for reliable power in extreme conditions. If you’re heading to the ends of the earth, this is the right power bank to pack.

All power inputs and outputs on the Pro are hidden beneath a rugged mini door. A small LED flashlight sits next to the USB-A and USB-C ports. Four battery indicator lights relay the key information that users need.

We managed to squeeze two full charges out of the Pro with an iPhone 13 — competitive stats in the 10k mAh category.

Goal Zero Flip 24

Cons

This Goal Zero Flip 24 (30) is one degree smaller than the common 10k mAh power bank size class. It’s about the same size as a 15-pack of gum, and it charged an iPhone 13 twice (almost, 81% on the second charge). It’s great value for 30, and it adds valuable peace of mind on long hikes and bike rides.

Unlike most power banks on this list, the Flip 24 only has USB-A input and output. It’s not surprising for such a small bank, but it might be annoying for folks without a compatible cable. Plus, USB-C charging tends to be faster than USB-A. The Flip 24 will charge your phone slower than most other options on this list.

On the plus side, the Flip 24’s built-in USB-A stick is quite convenient. It plugs directly into compatible ports and charges right up without a cord. The battery indicator lights light up when the user pressed the USB stick, which doubles as a button — product design panache.

For phones, earbuds, and smartwatches, the Flip 24 is a nifty little backup battery. If you need to charge larger devices, go with a power bank with greater capacity.

Anker PowerCore III Elite

Specs

  • Capacity 25,600 mAh
  • Weight 1.3 lbs
  • Size 7.22 x 3.24 x 0.94
  • Outputs USB-A (2x), USB-C (1x)
  • Inputs USB-A (1x), USB-C (1x)
  • Included cables USB-C to USB-C

Pros

  • Lots of power capacity in a small package
  • Simple design
  • Intuitive single-button interface

Cons

Anker has a solid reputation for simple, long-lasting, and fast-charging power banks. The PowerCore III Elite (160) boasts an impressive 25,600 mAh of capacity — an excellent figure for a power bank that’s only about seven inches long.

Most power bank users can get by with 10k mAH — a perfectly suitable capacity for a weekend’s worth of phone and earbud charging. The PowerCore III Elite is a major step up — it contains more than double the capacity of most of the power banks on this list. It’s potent enough to charge laptops and tablets, and it still manages to fit into most pants s.

Of course, the extra capacity has to come from somewhere. The PowerCore III weighs 1.3 pounds. That’s a bit heavy for backpacking. Still, compared to similar capacity power banks like the Goal Zero Sherpa 100PD, the PowerCore is relatively svelte.

The PowerCore III fully charged an iPhone 13 just over six times. Anker claims it can charge three devices simultaneously. During testing, it easily charged two smartphones at the same time.

The PowerCore dented easily during our 2-foot drop test, but it went on working without issue. It’s a great compact choice for photographers or remote workers on the go.

Hinovo Magnetic Charger

Specs

  • Capacity 5,000 or 10000 mAh
  • Weight 4.5 oz. (5,000 mAh version)
  • Size 4.09 x 2.75 x 0.35
  • Output Wireless charging via magnetic connection
  • Input USB-C (1x)
  • Water resistance Unknown
  • Included cables USB-C to USB-C (1)

Cons

This compact power bank magnetically adheres to the back of compatible smartphones to deliver power on the go. Instead of waiting while your phone remains plugged into a cable, the Hinovo magnetic power bank (39) goes where you go. It’s fully mobile, and highly convenient.

Our Editor-in-Chief has been living with the Hinovo for months, and he appreciates its ease of use and straightforward design. The slim 5,000 mAh version immediately doubles a smartphone’s battery life without much-added bulk. The major downside of the Hinovo is that it’s only compatible with certain phones that are MagSafe compatible.

Otterbox Fast Charge

Cons

The Otterbox Fast Charge (35) is available in three sizes: 10k, 15k, and 20k mAh. We tested the 10k version, though all three models have the same design and two-port layout. With just one in/out USB-C and one USB-A put out, it’s a simple and effective power bank that works best with smartphones and small devices.

The “Fast Charge” Moniker sets up high expectations. This power bank fully charged an iPhone 13 from dead to 100% in just over 90 minutes. While this stat is competitive for a small power bank, it’s about the same as several other top performers on this list. This Otterbox is a reasonably fast-charging product, but it’s on par with its peers on this list, not necessarily superior.

Compared to the more durable options we tested, the Fast Charge has an all-plastic casing that feels a bit delicate and cheap to the touch. It survived our drop test and continued to function, but it just doesn’t have the feel of excellent build quality. Still, it’s a perfectly usable power bank.

The 15k version (45) is a nice middle ground between common power bank sizes. We expect it could charge a newer iPhone three or four times, a meaningful improvement over the 10k version.

BioLite Charge 80 PD Powerbank

Cons

  • Battery indicator is not super precise
  • Battery indicator doesn’t turn off while charging

This unassuming powerhouse came to be one of our tester’s favorite power banks by accident. After getting his sleek, lightweight Anker charger stolen on a recent climbing trip, the BioLite Charge 80 PD (80) — his backup bank — found its way into his backpack on several ultralight treks and long road trip adventures.

It takes a lot for a power bank weighing over a pound to end up in a backpacking kit, but for super remote excursions where energy efficiency was a must, this thing was a lifesaver for our tester. Despite its 16.4-ounce weight, it can charge a smartphone over 5 times (tested with an iPhone 11), a tablet twice (tested with an iPad Pro), and even a computer once (tested with a MacBook Pro).

While you don’t need all these devices on a backpacking trip, this is a welcome power source for road trips, wilderness photo/video shoots, or international travel. And, for those backpacking jaunts that have you off the grid for five days or more, it’s hard to beat the power-to-weight ratio that this delivers.

The two USB-A Quick Charge and single USB-C PD ports offer exceptionally fast charging. The bank also only takes 4.5-5 hours to soak up a full charge, which is better than some other models with similar capacity we’ve tried. Its durable plastic shell gives this an indestructible feel, and we haven’t noticed a scratch on it after many miles of rough use.

With a 20k mAh capacity, it has the inherent cons of being quite heavy and comparatively large, but is on par with other banks in its category. We do find the battery indicator to be somewhat lacking. It is a bit hard to gauge exactly how much power is left, and we don’t like that the light remains on while charging. Some energy could be saved by having it switch off after it’s been plugged in for a second, and it can get annoying at night if it’s not covered up.

These slight gripes aside, we think that the BioLite Charge 80 PD delivers reliable power in a packable, durable design. If pure ultralight minimalism is what you’re after, there are better options out there. But, for the adventurer in need of a bit more juice on their excursions for multiple devices, this would be a solid pick.

OKZU C10002Y

Cons

This ultra-slim 10k power bank (26) is marketed as a power source for electrically heated outerwear, but it also works perfectly well for all sorts of small electronics. It charged an iPhone 13 to the brims three times before needing a recharge itself — a great showing for a bank that weighs just 6.8 ounces.

We found that the C10002Y gets warm to the touch when plugged into the wall, but this is likely just a result of the thin plastic casing — not a major concern. Speaking of the casing, this definitely isn’t the most rugged power bank on our list. It feels like one significant chest-height drop onto a hard surface would be the end of it. We held our breath during the 2-foot drop test, and though it did survive, it sustained minor visible damage.

Four indicator lights convert battery levels — including one light that turns green when “fast mode” is engaged. Interestingly, this light turned green while charging an iPhone via the USB-C port, but not when charging earbuds via a USB-A port. It seems there is some kind of sensor in the OKZU that engaged fast charging mode when the receiving device has a compatible battery. Neat.

Generally, this is yet another sweet little power bank. It’s mega thin, and hardly detectable when sitting snugly in a Plus, it’s affordably priced at just 26.

Lion Trek Portable Solar Generator

Specs

  • Capcity 27,000 mAh
  • Weight 2.1 lbs
  • Size 8.54 x 5.47 x 1.57
  • Outputs USB-A (2x), USB-C (1x), 12V AC (1x)
  • Inputs USB-C (1x)
  • Included cables Wall outlet to USB-C

Pros

  • Features an AC outlet for charging larger devices
  • Durable casing
  • Easy-to-read display

Cons

In both size and capacity, the Lion Trek Power Bank (229) is the largest power bank on this list. At 2.1 pounds and 8.5 inches long, it takes some liberties with its self-described “portable” nature. Still, this power bank justifies its size with a massive 27,000 mAh of capacity and a handy AC power outlet. Unlike most of the options on this list, the Lion Trek packs enough power for laptops, tablets, and small appliances like lamps, TVs, and coffee grinders. It’s the perfect size for a long-term solo road trip — especially when paired with a compatible solar panel.

We’ve been testing the Lion Trek for several months. Though it’s a bit too big and inconvenient for airline travel, it’s been our go-to power bank for car camping. On a single full charge, the Lion Trek recharged an iPhone 13 nine times. It kept a MacBook Air alive for three days of frequent use. According to its display, the Lion Trek only used 5% of its total battery life to fully charge a pair wireless earbuds.

For some folks on the go, an AC outlet is a must-have. The Lion Trek is one of the smallest banks to include one. Additionally, the unit houses two USB-A outputs and one in/out USB-C port. For mobile remote workers, the Lion Trek can function as an ultra-compact solution for the solar-powered off-grid lifestyle.

Power Bank Comparison Chart

Outputs

Power Bank Price Capacity Weight Size
Nitecore NB10000 Gen II 60 10,000 mAh 5.3 oz. 4.8″ x 2.3″ x 0.4″ 1x USB-A, 1x USB-C
Charmast 10400 23 10,000 mAh 6.6 oz. 3.6″ x 2.4″ x 0.9“ USB-A (2x), USB-C (1x)
Goal Zero Sherpa 100PD 68 25,600 mAh 24.0 oz. 7.7″ x 3.8″ x 1.0″ Wireless charging pad, USB-C (1x)
Dark Energy Poseidon Pro 10200 120 10,000 mAh 9.6 oz. 6.0″ x 3.3″ x 0.6″ USB-C (1x), USB-A (1x)
Goal Zero Flip 24 30 6,700 mAh 4.6 oz. 3.7″ x 1.6″ x 0.8″ USB-A
Anker PowerCore III Elite 160 25,600 mAh 20.8 oz. 7.2″ x 3.2″ x 0.9″ USB-A (2x), USB-C (1x)
Hinovo Magnetic Charger 40 5,000 mAh 4.5 oz. 4.1″ x 2.8“ x 0.4″ Wireless charging
Otterbox Fast Charge 35 10,000 mAh 8.1 oz. 5.6″ x 2.9″ x 0.6″ USB-C (1x), USB-A (1x)
BioLite Charge 80 PD 80 20,000 mAh 16.4 oz. 6.7″ x 3.2″ x 1.0″ USB-C (1x), USB-A (2x)
OKZU C10002Y 26 10,000 mAh 6.8 oz. 5.3″ x 2.7″ x 0.6“ USB-C (1x), USB-A (2x)
LionTrek Portable Power Unit 229 27,000 mAh 33.6 oz. 8.5″ x 5.5″ x 1.5“ USB-A (2x), USB-C (1x), 12V AC (1x)

Why You Should Trust Us

Every power bank on this list has earned its place through rigorous hands-on testing in the same real-world scenarios you’re likely to face. In the winter of 2023, author Austin Beck-Doss didn’t plug his phone or laptop into a single wall outlet for several months. Instead, he charged his devices exclusively via power bank. Through daily use and a series of standardized tests at home and in the field, Austin assessed the durability, performance, and capacity of innumerable brands and models. The recommended products on this list are the very best money can buy.

otterbox, fast, charge, power, bank

Power bank brands make lots of lofty claims about capacity, durability, and performance. Instead of simply trusting the statistics written on the side of the packaging, Austin put manufacturer claims to the test. Every power bank was fully charged to determine exactly how many times it could fully charge an iPhone 13 before depleting. Austin also measured the total time that each depleted power bank took to fully recharge once plugged into a wall outlet.

Our durability test involved prolonged regular use indoors and out, and a standardized drop test. Every bank was dropped exactly 2 feet onto a hard concrete surface to simulate the classic electronics fumble that we all experience from time to time. Some power banks ceased to function after a single drop. Of course, none of those models made the list.

Buyer’s Guide: How to Choose a Power Bank

For better or worse, most folks today feel a wave of concern when their smartphone battery drops below 20%. Phones, tablets, laptops, and other portable electronics pack a lot of utility — and we’ve grown reliant on them to conduct our everyday affairs.

Power banks are physical stop gaps that prevent dreaded cases of DPS (dead phone syndrome). Whether you forgot to plug in overnight, or you’ve been traveling all day without access to an outlet, power banks are a lifeline for you and your portable electronics.

These days, power banks come in all shapes and sizes — from mini units that can dangle from a keychain to 25-pound behemoths. On this list, we focused on the most popular category: personal-use portable power banks. Portable is a subjective term. For this list, we only considered products that weigh about 2 pounds or less and fit easily into any backpack.

In this comprehensive buyer’s guide, we break down everything you need to know about power banks; capacity, charge times, inputs, outputs, solar capability, you name it. Our hope is that by using this guide, you’ll be able to hone in on the perfect portable power bank to suit your everyday needs.

What Is a Power Bank?

A power bank is a rechargeable battery that can transfer power to other electronic devices. Power banks are like wall outlets that you can take with you. Simply plug in your phone or laptop via a standard USB-A or USB-C cable, and boom, you have instant portable power. People carry power banks for the same reason remote freight drivers carry extra cans of gasoline: If the main supply runs out, there’s extra fuel on board.

Size and Capacity

Powerbanks are available in many sizes. The smallest power banks are small enough to fit on a key chain and typically will only deliver a quick hit of power per charge. The largest power banks in existence can charge EVs — but those aren’t exactly portable.

Generally, power bank capacity is measured in milliamps per hour — mAh. This unit indicates how many milliamps of electric current a given power bank can deliver per hour.

All smartphone manufacturers utilize different batteries and charging systems. The working capacity of any power bank entirely depends on the device it is charging. Most fully charged smartphones contain 3,000 to 4,000 mAh, That means, on paper, a 10,000 mAh power bank can recharge a smartphone about three times.

Most of the power banks on this list hold around 10,000 mAh — a standard size for recharging small devices like smartphones, Bluetooth headphones, and smartwatches. Though brands often claim their 10,000 mAh power banks can recharge smartphones five, six, or seven times — they rarely live up to those claims.

Smartphone batteries are becoming larger and more efficient. In our experience, 10,000 mAh power banks will charge a modern smartphone between two and three times. On this list, the Nitecore NB10000 is the most impressive 10k mAh power bank that we tested. It fully charged an iPhone 13 two and a half times.

If you are looking for a power bank for something like a long backpacking trip, it’s important to find an appropriate weight-to-capacity ratio for your adventure. You’ll also want one that fits comfortably in your backpacking backpack, and doesn’t add too much bulk to your kit.

Compact 10k power banks are rightfully popular. They fit easily into most s, and they have plenty of capacity to keep a small device or two alive for a few days.

The next standard portable power bank size is 20,000 mAh. Not all power banks in the 20k range will have a capacity of exactly 20,000 mAH — that’s just a handy benchmark figure. Naturally, 20k power banks are bigger and heavier than their 10k little siblings. Most 20k banks weigh at least one pound and are roughly the size of a small tablet or jumbo candy bar.

Though 20k power banks are a bit cumbersome for everyday carry, they offer much more utility. Most banks of this size can fully recharge a smartphone six or more times. Plus, many 20k power banks can charge multiple devices at the same time. If you’re looking for a power bank to charge multiple personal devices over the course of a multi-day backpacking trip, 20k is your best bet.

Power banks above 20k mAh start to get fairly heavy and less portable, but they’re great for folks looking to charge a larger device such as a laptop on the go. If you’re searching for a bank that can handle the demands of laptop charging, around 20k mAh is the bare minimum capacity you should consider. On this list, the Goal Zero Sherpa has an impressive capacity of 25,600 mAh. The Lion Trek is another excellent high-capacity power bank — and it even sports a standard three-prong AC outlet.

Charge Times and ‘Fast Charging’

The best power banks are quick to store power and equally quick to dispense it. Combined with the appropriate modern charging cable, all of the power banks on this list perform well in this aspect.

These days, many devices including phones, power banks, tablets, and cables claim to support “fast charging.” In reality, there is no universal standard for what “fast charging” really means. Each individual device has specifications that determine how much wattage delivery it can handle. Every element in the charging system — phone, power bank, and cable — plays a role in the rate of power delivery.

All batteries operate with a specific amount of voltage and can input and output a maximum amount of current. Fast-charging power banks have the ability to quickly pump more power into the receiving device.

For example, early iPhones came with a 5W power adaptor in the box. Those 5W adaptors took over two hours to charge standard smartphones. On this list, the speedy OtterBox Fast Charge delivers 18W power — it can fully charge an iPhone 13 in just over 90 minutes.

In general, any charging source that can deliver around 15w or more could be considered “fast charging.”

While fast charging is highly sought after, it can also be a detriment to your long-term battery health. Certain small devices such as headphones and fitness watches have relatively low maximum tolerable power delivery.

If you charge a pair of earbuds with a superpowered fast-charging wall port or power bank, it can cause irreversible damage to the battery life of those headphones. Many modern power banks — such as the OKZU C10002Y and the OtterBox Fast Charge — can decrease their output to meet the needs of a small device or fragile battery.

To choose the perfect power bank for your personal devices, check the device’s USB PD (power delivery) Power Range. For example, if a device’s USB PD Power range is 15-27W, pick a bank that delivers power within that range.

Types of In/Out Ports

Nearly all small electronic devices including smartphones, smartwatches, tablets, earbuds, headphones, and laptops charge via one of three standard input ports: Micro USB, USB-A, and USB-C.

Micro-USB ports are growing obsolete, but they’re still relatively common on power banks today. USB-A ports are typically used as outputs, though some small power banks such as the Goal Zero Flip 24 do have USB-A inputs, which eliminate the need for a charging cable.

The most common kind of input port is USB-C — the same port found on all modern iPhones. USB-C ports are easy-to-use, efficient, and durable.

Power banks only need a single input charging port, but it’s handy to have multiple types of output ports. On this list, the Lion Trek Power Bank has an impressive variety of outputs including USB-A, USB-C, and an AC outlet. Though it’s great to have plenty of output options, power bank users will mostly use USB-C ports.

Wireless Charging and Magnetic Power Banks

Some larger power banks are equipped with wireless charging capability. On this list, the Goal Zero Sherpa 100 PD comes with a wireless charging pad that can deliver up to 15w of power to compatible devices. In general, wireless charging from a power bank will be slower than using a cable, but it’s highly convenient in certain situations.

Some power banks attach directly to smartphones via magnetic connection. These power banks are compact units that typically pack just enough power to recharge a compatible smartphone a single time. On this list, the Hinovo Magnetic Charger is a highly functional and convenient option. It essentially doubles your phone’s battery — no cable required. Of course, only some smartphones are magnetic charging enabled.

Pass-Through Charging

If a power bank has “pass-through charging,” it is able to take in and distribute power at the same time. Pass-through equipped power banks can charge devices while plugged into a wall charger — a handy feature when you’re in a hurry. Many power banks on this list have pass-through charging, including our top pick the Nitecore NB10000.

Durability and Waterproofing

Depending on your needs, durability and waterproofing may be top priorities. If you plan to use your power bank for outdoor applications such as hunting, backpacking, and off-roading, we recommend that you pick one that’s built to withstand more rugged use. On this list, the Dark Energy Poseidon Pro 10200 is a rugged standout. It is waterproof, drop resistant, and immune to extreme temperatures.

Unlike the Poseidon Pro, most power banks aren’t built to withstand harsh treatment or exposure to the elements. For longevity’s sake, we recommend keeping your power bank relatively warm and fully dry. To preserve the integrity of the battery, power banks should be plugged in and charged once every few months.

FAQ

If treated properly, the power banks on this list should perform reliably for several years. All batteries degrade with time and regular use. Most modern power banks can be fully charged and discharged about 1,000 times before they no longer function. For most users, this equates to 3-5 years’ worth of use.

All of the power banks on this list are relatively small and portable. The majority of power bank users pick 10,000 mAh power banks, a good choice for recharging a personal smartphone. Compact 10,000 mAh power banks like the Nitecore NB 10000 offer a nice balance between utility and portability. They fit in a pant. and they pack enough power to keep a smartphone alive for several days without a wall outlet.

If you plan to charge larger devices like a tablet or laptop, we recommend sizing up to the 20,000 mAh range. These power banks typically weigh 1-2 pounds, and they’re still compact enough for hiking, traveling, etc. On this list, the Anker PowerCore III Elite has a strong battery that easily recharges a laptop — or multiple small devices at once.

Most small portable power banks can be carried onto an airplane. According to TSA, power banks cannot be kept in checked luggage. Certain airports don’t allow passengers to travel with more than 27,000 mAh in total battery storage.

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