How Much mAh Do I Need in a Power Bank. Juice 4 power bank

How Much mAh Do I Need in a Power Bank

Two major factors that must be considered when deciding how much mAh (power) you need in a power bank are usage and time. If you use your phone as much as the rest of us, then you are well aware of the woes of a drained battery. Nowadays, it is essential to have a portable charger readily accessible in order to skip the annoyance of searching for an available AC outlet.

Whether you refer to them as portable chargers, power banks, fuel banks, power cells or back-up charging devices, one thing remains, they are a reliable source of reserve power.

But how much mAh in a power bank is too much, or worse, not enough?

With that question in mind, we are going to help you narrow down your search to a portable charger that fits your particular lifestyle and power needs.

What is mAh?

Like we have mentioned in a previous portable power bank article, battery capacity is rated by milliampere hours (mAh), which is “the amount of capacity needed to let one milliampere of electrical current flow for one hour.” The more mAh, the more power a battery pack has to keep charging your mobile devices.

But what kind of portable charger works best for you?

We recommend you decide early on what you will be using the power bank for and what type of power user you are. Will you use the extra juice to occasionally top off your phone (light) or do you need a power source to set up a remote office (heavy) to get ahead of some work while on vacation?

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Once you are aware of your use cases, you can weigh the options.

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Light

If you are just the occasional power booster, a more compact and lower capacity power source is right up your alley. Anything from the 5000-2000 mAh in a power bank will work best for you, but you must remember you will more than likely not have multiple options for power included with a smaller device.

Heavy

If you need a higher capacity power source for a longer period of time, a portable power bank with a large mAh such as 40,000 mAh is the safest bet. With this option you do run the risk of sacrificing portability, so you must plan how you can store it for easy accessibility.

Nowadays, there are a variety of portable battery banks on the market that can easily fit in your backpack and offer multiple sources of power such as AC outlets and USB charging ports.

Conclusion

Whatever power capacity you need in a portable power bank, you can be sure there is a variety of options out there that will suit your needs. The next time you are browsing, don’t forget to ask yourself what kind of user category you fall into. Having an idea of how much power bank mAh you need will make the selection process pain-free.

Juice-Up Slim 10,000mAh QC-PD Slim Power Bank UM1112BLK

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You have to send us a couple of pictures of the damaged product. If it is found to be a manufacturing fault, we shall replace the product immediately. In all other cases, the brand’s warranty terms shall apply. UltraProlink Care shall assist you in registering your complaint with the brand. However, the final action resolution shall be done by the brand.

What all needs to be returned

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UltraProlink Juice-Up Slim 10K is a 22.5W/ 10,000 mAh, power bank in a premium sleek metal housing. It’s the sleekest, smallest, thinnest 10,000 mAh power bank around. This small but mighty power bank will recharge your phones other small electronics is excellent for the outdoors and travelling. Proudly made in India, its BIS safety certified. The powerbank offers pass-thru charging feature which means the power bank connected device can get charged simultaneously. The unit gets fully charged within 2.0-2.5 Hours depending on how much battery is depleted. The battery strength of the power bank is indicated through the LED lights. Included in the box. Power bank Unit x 1 / USB Type C. C cable 1m / Manual x 1.

Warranty Information

LIMITED WARRANTIESAll UltraProlink products are covered under standard warranty period given below. The warranty is limited only to Manufacturing Defects. No Claims will be entertained for defects occurring due to mishandling, physical damage of any kind of voltage fluctuations. It is advised to operate all electronic devices as per instructions given in the user manual. Plastics Liquids are not covered under any sort of warranty. Kindly refer to our detailed warranty policy

Delivery

At UltraProlink.com, we provide world-class shipping to all our customers that includes inspection, fast on-time delivery, top quality packaging, insurance for the package, and timely communication at each stage of shipping. We completely understand that once you buy merchandise online, the biggest question usually is Where is my stuff? well at UltraProlink.com, we address that concern by promising you Hassle Worry Free Shipping. This means that once you have bought a product at our site, we take care of everything so you don’t have worry about anything. Each order we receive will be processed within 48 hours, and you will hear from us at every step of the way- i.e.- when the order is placed, processed, shipped, and delivered. And of course, any questions along the way just contact our Customer Support and we will resolve your problem right there. We have partnered with most of the top courier and logistics partners to assure that you receive your order on time and safely with full courtesy and attention. Kindly refer to our detailed Delivery Policy here.

Delivery

At UltraProlink.com, we provide world-class shipping to all our customers that includes inspection, fast on-time delivery, top quality packaging, insurance for the package, and timely communication at each stage of shipping. We completely understand that once you buy merchandise online, the biggest question usually is Where is my stuff? well at UltraProlink.com, we address that concern by promising you Hassle Worry Free Shipping. This means that once you have bought a product at our site, we take care of everything so you don’t have worry about anything. Each order we receive will be processed within 48 hours, and you will hear from us at every step of the way- i.e.- when the order is placed, processed, shipped, and delivered. And of course, any questions along the way just contact our Customer Support and we will resolve your problem right there. We have partnered with most of the top courier and logistics partners to assure that you receive your order on time and safely with full courtesy and attention. Kindly refer to our detailed Delivery Policy here.

How to Use a Power Bank: Here’s Everything You Need to Know

You know that anxious feeling when the “low battery” notification pops up on your screen? There’s something about it that can send your mind into a tailspin. Even worse, sometimes you don’t have your charger, and you’re nowhere near an outlet! Luckily, there’s a handy tool out there to keep you fully charged: the power bank. If you’re looking to learn the basics of power banks, you’ve come to the right place. Let’s get right into it!

How to Charge a Power Bank Top

Charging a power bank is pretty straightforward, especially since most of them come with instruction manuals. However, if yours didn’t come with one, you can still charge it without breaking a sweat!

Here is the best way to charge a power bank:

  • Attach the cable to the power bank.
  • Connect the other side of the cable to your power source.
  • Your power bank should begin charging.
  • Once charged, unplug the power bank from the wall and your phone.
  • Step 1: Attach the Cable Attach the cable that came with your power bank to the device itself. Most of the time, the port that connects to your power bank is a micro USB.
  • Step 2: Plug Into Power Source Next, plug in the other side of the cable (usually a standard USB) into your wall plug or your computer. Some wall outlets even have USB ports built in, so if you have one of those nearby, you won’t need a wall adapter!
  • Step 3: Start Charging Your power bank should start charging. If it has an indicator light, keep a close eye on it. Once it is fully charged, all the indicator lights will illuminate.
  • Step 4: Unplug the Charger Unplug the charger from the wall or your computer once all indicator lights are illuminated.

How Often Should You Charge a Power Bank? Top

A general rule of thumb is that the more you charge your power bank, the shorter the lifespan of the device. You should charge your power bank only as often as is necessary. If you use your power bank sparingly, at least charge it once every 3 months to keep the battery active.

Can I Use My Phone While Charging? Top

There shouldn’t be any harm in using your cell phone while it is charging. You may notice your phone getting a bit warm, but this is expected. It’s worth noting, however, that using your phone while it is charging may not result in a 100% charged battery since you are actively using the power source before the charge is complete. If you want your cell phone to be fully charged, it’s best to leave it alone while it powers up!

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Why Do Some Power Banks Take Longer to Charge? Top

Some power banks take longer to charge because larger batteries have a bigger capacity to store energy. For example, a high capacity power bank with 20,000 mAh can take up to 40 hours to charge fully. Smaller power banks with 4,000 mAh may only take a couple hours to charge.

Think of it like a shot glass versus a tall drinking glass. It’s going to take a lot longer for a drinking glass to fill with water than it will for the shot glass!

How Long Should You Charge a Power Bank? Top

You should only charge your power bank for the amount of time it takes for it to get a full battery. Once the device is fully charged, you should unplug it from the power source. You can check the user manual to find out how your power bank indicates it has been fully charged, but most of them have some sort of light that shows the amount of power left in the battery.

The amount of time it takes for a power bank to reach its full capacity varies depending on the type. A heavy-duty power bank will take longer to charge than a smaller one. Generally speaking, it takes between 1 to 2 hours for a power bank to become fully charged!

Did You Know?

There are super powerful power banks on the market that allow you to power larger devices like televisions, curling irons, and oscillating fans!

Can I Charge My Power Bank Overnight? Top

You should avoid charging your power bank overnight whenever possible. It is unlikely to cause significant damage, but there is still a chance it could reduce the lifespan of your battery over time.

For lower-quality power banks, leaving your power bank plugged in after it is fully charged can cause overheating, especially if they are left to charge in direct sunlight. The safest option is to always unplug your power bank once it has reached full capacity!

How Can You Make Your Phone Charge Faster? Top

If you ever find yourself in need of a quick battery charge for your smartphone, there are a few steps you can take to make your phone charge faster. Always make sure your charging cables are plugged all the way in and your power bank has enough power to charge your phone.

Here are some tips to make your phone charge faster:

  • Turn on airplane mode
  • Don’t use your phone while charging
  • Turn your phone off
  • Use a high-capacity power bank
  • Don’t use a wireless charger

Turn on Airplane Mode

Putting your phone on airplane mode is a surefire way to reduce charging time. This is because the setting turns off your phone’s Wi-Fi, Bluetooth, and cellular capabilities, which are all settings that drain your power! When your device is on airplane mode, it’s consuming less power, which makes for a quicker charge.

Don’t Use Your Phone While Charging

Using your phone while it’s charging is going to increase the amount of time it takes for your battery to be fully powered. It may be difficult to resist the urge to send that text message or check Instagram, but it’s worth the sacrifice if you want your phone to be fully charged!

Turn Your Phone Off

This strategy works similar to airplane mode because it turns off all the components in your phone that would otherwise be using your battery. When your phone is powered off, it’s able to reach a full charge much faster. Keeping your phone on while it’s charging is like trying to sleep while you’re hungry or thirsty—it’s going to be much more difficult!

Use a High-Capacity Power Bank

Some power banks are more powerful than others. The heavy-duty ones are going to make your phone charge much faster than the smaller ones! However, not all phones can handle a high-powered portable charger. It’s best to contact the manufacturer of your cell phone to see what they recommend. Charging your battery with too much power is never a good idea!

Don’t Use a Wireless Charger

Wireless chargers are a genius invention, but they’re not the best option if your goal is to charge your phone quickly. Plugging your phone in directly to a power bank or outlet is the quickest way to bring it back to life because it’s directly connected to the power source!

At the end of the day, any way you can prevent your phone from using battery while charging will ultimately help it charge faster! You might also notice your phone charging slowly with a low-capacity power bank. Be sure that your phone and power bank are compatible for the most efficient charging.

How Long Do Power Banks Last? Top

The amount of time a power bank lasts varies from product to product, but on average, a power bank should last at least a couple hundred charging cycles.

If you use your power bank frequently, you’re going to consume more charging cycles than someone who only uses their power bank occasionally. There are more durable power banks out there than can last upwards of 1,000 charging cycles, but most of the smaller ones on the market have a lifespan of 200 or 300 cycles. The age of the power bank also has a significant impact on how long it lasts. As the batteries inside of the device age, they become less effective.

How to Store a Power Bank Top

Power banks should always be stored in a cool location that isn’t exposed to direct sunlight, such as a desk drawer. According to Battery University, batteries achieve optimum service life if used at 68 degrees Fahrenheit, or slightly below that temperature.

If you store your power bank in direct sunlight or a warm environment like the glove box in your car, it won’t last as long. It’s also best to store your power bank in a pouch or case when not in use. This helps protect the charging ports so they do not accumulate dust or debris!

Should You Buy a Power Bank? Top

If you’re always on the go or find yourself with a low battery, you should buy a power bank! They come in handy during vacations, trade shows, plane rides, or any time you are using your phone away from an outlet. The type of power bank you’ll need depends on your lifestyle and how many devices you need to charge.

There’s no reason to not invest in a power bank. They’re like an extra insurance policy for your phone’s battery! Having one with you just in case is always a good idea.

The Bottom Line

Power banks make our lives a bit easier by ensuring we never run out of juice. By using them properly, you’re not only protecting the power bank, but you’re also getting the most out of your investment! A properly cared-for power bank will get you through those long meetings and plane rides. Just think of all the adventures you’ll go on while still having peace of mind!

Discharging at High and Low Temperatures. (n.d.). Retrieved March 25, 2020, from https://batteryuniversity.com/index.php/learn/article/discharging_at_high_and_low_temperatures

Summerson, C. (2017, December 4). Is Wireless Charging Slower Than Wired Charging? Retrieved March 27, 2020, from https://www.howtogeek.com/326094/is-wireless-charging-slower-than-wired-charging/

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The Best Portable Chargers and Power Banks for 2023

Is your phone, tablet, or laptop typically in the battery red zone before the day’s end? These portable chargers and power banks give you the most boost when you’re out of juice.

I love portable technology—if you can put it in a or a bag, I’m probably into it. I’ve covered phones and tablets of all shapes and sizes, and reviewed everything from game consoles to laptops in my decade-plus career. Prior to joining PCMag, I wrote articles for Android Authority, How-To Geek, MUO, New Atlas, Tom’s Hardware, and plenty of other tech publications.

Apple MagSafe Battery Pack (Credit: Steven Winkelman)

Watching your phone or tablet steadily run out of power when you’re nowhere near an outlet is stressful. Fortunately, third-party portable batteries are available in many sizes and capacities. Some power banks offer fast charging, wireless charging, built-in cables, AC adapters, and LED flashlights—and even the ability to jump-start your car. Regardless of your budget, you can find a portable charger that keeps your device going when your battery icon starts to dip into the red.

But with so many options to choose from, how do you know which one is right for you? Read on for our tips, followed by the most important points to consider as you shop.

Recommended by Our Editors

Best Affordable PD Power Bank

Anker PowerCore Slim 10000 PD

Why We Picked It

Despite its reasonable price, the Anker PowerCore Slim PD 10000 offers high-end features like USB Power Delivery for fast charging, as well as both types of USB ports.

Who It’s For

This 10,000mAh charger doesn’t have the highest capacity, but it’s more than enough for people who need just a little extra power throughout the day and don’t have the patience for slow charging speeds.

Best Ultra-Portable Power Bank

Anker 321 Power Bank (PowerCore 5K)

Why We Picked It

A huge battery capacity is convenient, but sometimes you need a small device that you can carry around without a backpack. The 5,200mAh Anker 321 Power Bank fits that need perfectly, especially because it offers both a USB-A and USB-C port.

Who It’s For

This is ideal for people who care more about portability than capacity. It won’t charge your phone multiple times, but it can still get you through a long day.

Best for Charging Laptops

Anker 737 Power Bank

Why We Picked It

The Anker 737 features 140W output, which means it can charge bigger, more power-hungry devices like a laptop just as effortlessly as it can juice up a phone or tablet.

Who It’s For

If you often need to charge a laptop when you’re nowhere near an outlet, this 24,000mAh backup battery can lower your stress levels. It’s more expensive than other options on this list, so people who tend to charge smaller devices like phones or tablets are better off with the more affordable choices.

Apple MagSafe Battery Pack

Why We Picked It

True to its name, Apple’s MagSafe Battery Pack is notable for its MagSafe support. You can simply stick it to the back of your phone to charge it wirelessly.

Who It’s For

If you need to keep your iPhone running while away from home, you won’t find a more convenient solution. People with older iPhones (before the iPhone 12) need to look at other options, though, as MagSafe isn’t supported.

Best High-Capacity Power Bank

Mophie Powerstation XXL

Why We Picked It

The Mophie Powerstation XXL does it all—it has a considerable 20,000mAh capacity, 18W PD charging, and both USB-A and USB-C ports.

Who It’s For

If you’re looking to recharge a phone or tablet several times on the go (and quickly), this is a top choice. The only drawback is that it doesn’t support larger devices like laptops.

Most Durable PD Power Bank

Otterbox Fast Charger Power Bank

Why We Picked It

Many people know Otterbox for its durable phone cases, but the company is now bringing that expertise to the world of power banks. In addition to its strong build quality, the Otterbox Fast Charger Power Bank has all the key features you need, such as fast charging with PD, both types of USB ports, and several options for battery capacity.

Who It’s For

If you are worried about damaging your backup battery when you travel or commute, this is one of the safest bets. It also comes with a limited lifetime warranty.

Best Solar-Powered Portable Charger

QiSa Solar Charger

Why We Picked It

The QiSa Solar Charger can use the sun to recharge itself, supports both wired and wireless charging, and even has a built-in flashlight. Best of all, it offers a massive 38,800mAh capacity.

Who It’s For

If you spend a lot of time outdoors, this is among your best choices for keeping your devices running while off of the grid. In other words, it’s camping approved.

What Size Battery Do You Need?

On the.friendly front, most smaller batteries have a capacity of around 5,000mAh, which is typically enough to top up most phones once.

Meanwhile, a 10,000mAh battery can give today’s flagships two full charges. A 20,000mAh battery can charge a flagship four times, or two phones two times. Some power banks have enough juice to power laptops. Of course, a higher capacity often translates to a heavier, larger, and more expensive battery.

Most companies advertise how many times their products can recharge popular phones, but if you want to calculate that number for yourself, RAVPower has a useful guide (Opens in a new window) that can give you an estimate.

In the end, it’s best to assess your typical needs before buying. If your phone hits the red zone by mid-afternoon and you only need enough juice to get you to the end of the workday, a 5,000mAh battery should be plenty.

What’s the Difference Between Power Input and Output?

You’ll find three types of ports on today’s portable batteries:

Generally speaking, you charge the battery itself via micro USB or USB-C (input). Some batteries charge faster than others and USB-C charges much faster than micro USB.

Some batteries include built-in output cables and these generally have micro USB, USB-C, or Lightning connectors.

The most important thing to do is to match the battery’s output to your phone’s input. For example, if you have an iPhone, be sure the battery has its own Lightning connector or supports USB-A-to-Lightning or USB-C-to-Lightning cables.

Larger batteries with higher capacities might include a multitude of ports to support input and multiple outputs at the same time. You may see two USB-A and two USB-C ports, for example, though micro USB ports are becoming less common.

If you picked up an iPhone 13 or iPhone 14 and were surprised by the lack of an included wall charger, see our article on charging your iPhone.

What Is Fast Charging?

Another factor to consider is how quickly a power bank can charge your device. Battery output is measured in voltage and amperage. Amperage (or current) is the amount of electricity that flows from the battery to the connected device, while voltage is the amount of potential energy. Multiplying volts by amps gives you wattage, the measure of total power. To make devices charge faster, most manufacturers either vary the voltage or boost the amperage.

Today’s devices support a wide range of Rapid-charging technology, such as Qualcomm QuickCharge, USB Power Delivery, or proprietary fast-charge systems.

Quick Charge works by increasing voltage rather than amperage. This standard typically allows you to charge supported phones to 50 percent capacity in 30 minutes, which is especially helpful when you need power in a pinch.

Power Delivery is a newer protocol in which two compatible devices negotiate on the fastest charging option available based on the charger, cable, and circuitry. It also allows for power to flow both ways.

The most common devices (Apple iPhones and Samsung Galaxies) support charging rates of 27W and 45W, respectively. It’s best to look for batteries that can support charging in that range.

Is Pass-Through Charging Safe and Useful?

Pass-through charging is another feature to consider; with it, you can charge devices and the portable power bank simultaneously. That’s convenient if both your phone and backup battery are running on empty. You shouldn’t encounter any safety issues if the manufacturer of the portable battery you buy advertises pass-through charging as a feature, but the power output might change in this mode.

How Does Wireless Charging Work?

Wireless charging has become popular because it allows you to power up compatible devices without a cable. Qi is the dominant standard for compatible Android phones (up to 18W) while Apple iPhones rely on MagSafe charging (up to 15W). iPhones will charge wirelessly on Qi chargers, but only at 7.5W.

Some battery makers have built Qi or MagSafe-compatible wireless charging into the surfaces of their portable batteries. Such batteries mean you can leave the cables at home.

Should You Buy a Battery Case Instead of a Power Bank?

If you find that you often forget to carry your backup battery when you need it most, you should consider a dedicated battery case instead. These combine the portability and protection of a case with additional battery capacity to keep your phone topped off at all times.

There are several drawbacks. First, they have limited additional capacity on board. Second, they are limited in terms of the number of phones they support (mostly just iPhones, Galaxies, and Pixels). Third, you can’t charge much else with them.

The Best Wireless Chargers

Why fumble around for a charging cable when you can rest your phone on a wireless charging pad? Whether you’re an Android user or an iPhone fan, check out our roundups of the best wireless chargers and the best MagSafe chargers to help you cut the cord.

Steven Winkelman contributed to this story.

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