What Are Portable Power Banks?
Let’s get right to it. If there aren’t any outlets to plug into, what do you rely on for power? How do you charge the device you have and plan on continuing to use? The answer to that question is quite simple and is an increasingly popular industry, Portable Power, more specifically, Portable Power Banks.
If you want to stay powered you must be outfitted with a reliable source of reserve power that comes in a compact and easy to carry package. We are going to go over the most frequently asked questions and explain what portable power banks are.
What Are Portable Power Banks?
If you want to make an informed purchase, the best practice is to understand the basic terminology. A portable power bank is a battery which resides in a special case that has a specific circuit that controls power flow.
Much like a bank account where you deposit you hard earned cash and withdraw it later, a power bank allows you to store electrical energy and then use it later to charge your device. Before we get into what types of power banks there are, let’s understand the power that is stored within these units.
What Does mAh Stand for?
While these units come in all shapes and sizes, they also vary in power capacity, much like the variety of smartphones on the market.
The term you most often seen while researching these units is mAh. It’s an abbreviation for “milliampere hour,” and it’s a way to express the electrical capacity of smaller batteries. The A is capitalized because, under the International System of Units, “ampere” is always represented with a capital A. To put it simply, the mAh rating denotes capacity for power flow over time.
Now that we know what a power bank is and what the power that resides in them is, let’s take a look at what types of power banks there are.
What Types of Power Banks are There?
While there are various styles and brands that cater to a user’s specific needs, you can break down the types of portable power banks into three categories.
Universal Power Banks
These come in many sizes and configurations that cater to you device requirements. Some may feature both an AC outlet and USB ports plus USB-C, while others may only have a single USB option.
Solar-Charged Power Banks
These have photovoltaic panels which can charge the internal battery of the pack when placed in sunlight.
Battery Case (for your phone)
These typically attach to the back of your phone and, while convenient, they have narrow device compatibility. Portable power banks for your phone are typically smaller in power (mAh) and will only recharge your phone a couple of times before requiring a recharge of its own. Here are some of the top portable power banks according to Android Central.
How Many Times Can a Power Bank Charge my Device?
Here’s a question we see frequently and that can be answered with a formula as shown below.
(Labeled capacity of the power bank x 3.7 / output voltage of power bank) x 0.85 / battery capacity of device = Total number of recharges.
Now, that you have the formula all let’s try an example. We can use a 40,200 mAh power supply and an iPhone 8 which has a battery capacity of 1821 mAh.
(40,200 mAh x 3.7 / 5) x 0.85 / 1821 mAH = 13.8 recharges
First we have the labeled capacity for the power bank – 40,200 mAh
Second we multiply that by 3.7. This number is the average voltage you will find in a battery cell. We get this number normally by finding the midpoint between a fully charged cell and an empty cell.
Third step is dividing 148,740 (sum of 40,200 x 3.7) by 5. We divide by 5 because this is the average voltage output of a typical power bank.
We continue on to the fourth step which is multiplying 29,748 (sum of 148,740 / 5) by 0.85, which is the average efficiency of a power bank.
Yes, this means you will never get 100% of the total expected output.
Finally we divide 25,285.8 (the sum of 29,748 x 0.85) by the battery capacity of the desired device you are trying to charge, in this case the iPhone 8 is 1,821 mAh.
The final sum comes out to 13.8 and that is how many times you can recharge an iPhone 8 with a 40,200 mAh portable power supply.
There you have it. You now know what a power bank is, what power (mAh) is stored in a power bank, and how to calculate how many recharges your power bank can supply to whatever device you decide to use. If you have any questions feel free to leave a comment below and reach out for additional support. Keep an eye out for future posts!
Our favourite portable chargers and power banks rated and reviewed, plus an in-depth buyer’s guide
by Matt Jones
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In recent years, the rise of portable battery chargers or power banks has meant that heading into the great outdoors no longer means going off-grid. And being able to keep your devices charged even when you’re miles from the mains has some undeniable benefits. After all, a functioning phone can be a lifesaver in an emergency. We’ve tested ten of the best portable power banks and solar chargers for backpacking in a range of sizes and capacities. So whether you’re after a small, lightweight pal or a rugged, heavy-duty Hero, there should be something for you. This group test also includes three solar-powered chargers. These offer an alternative solution to the perennial power problem for adventurers planning to spend multiple days in the wilderness.
What Makes The Best Portable Power Pack?
Firstly, think about how much power you’re likely to need and how long you might be away from a power source. This will dictate what size power bank you need in terms of battery capacity, which is usually measured in milliamp hours (mAh).
To help you out, note that it typically takes 2,500 to 3,500mAh to charge a modern smartphone (though many factors can affect power consumption). Charging a GPS unit or digital camera is likely to consume a similar amount of power, while charging a head torch, smartwatch or GoPro will consume much less. High-powered devices like tablets and laptops are the biggest drain on battery capacity.
Put simply, the larger the rated capacity (in mAh), the more juice the power bank can store – though the trade-off is increased size and weight. So if you’re only carrying a smartphone on a day walk and just want a back-up power source, look for a.sized battery charger. On the other hand, if you’re planning to spend multiple days in the wilderness carrying a number of different devices (like a GPS, phone, GoPro and digital camera), then you’re going to need one of the bigger power banks around (probably 20,000mAh).
To power multiple devices effectively you’ll also need a power bank that supports simultaneous charging, i.e. one that has at least two or more outlet ports. Many of the latest models also offer features such as quick charging through high-speed USB or USB-C connectivity, as well as in-built technologies to prevent over-charging and optimise charging efficiency.
Durable Power Banks
Also consider your environment. In damp, humid conditions or on expeditions you might need a waterproof and rugged power bank, which can cope with moisture or even complete immersion as well as bumps and knocks. If so, look for a product with a certified IP (International Protection) rating, which is usually expressed as two letters or numerals, e.g. IPX6 or IP67. This standard classifies the degree of protection provided against intrusion, dust, accidental contact and water.
“It typically takes 2,500 to 3,500mAh to charge a modern smartphone”
As well as being impact and water-resistant, power banks specifically designed for the great outdoors often have LED lights, so they can be used as torches. This can be a useful additional feature, as can power banks with integrated charging cables – so you don’t have to remember to bring separate cables with you.
Other devices have integrated or add-on solar panels, which offer the ability to top up the power using energy from the sun. Solar panels are becoming more efficient all the time, meaning that this is now a viable option for those planning to spend days or even weeks off-grid. Most solar panels trickle-charge a power bank over a period of several hours, but others can also be plugged directly into your device.
GP Batteries Charge AnyWay
Price: £29.99 Weight: 224g Capacity: 10,400mAh Dimensions (L x W x D): 81 x 64 x 25 mm
One of the most innovative bits of outdoor kit we’ve seen recently, The Charge AnyWay from GP Batteries is a 2-in-1 battery charger and power bank. It comes with 4 x nifty RecyKo rechargeable AA batteries. These batteries can all be used separately from the power bank. That means that with the power bank and these batteries, you’ve got the versatility to charge your smartphone or battery-powered devices like a headtorch. It’s easy to use too, thanks to a dual color LED indicator that displays charging status. In-built safety protection offers security against overheating, overloading or short circuits.
Pros: Lightweight, versatile, easy to use and eco-friendly, since it uses rechargeable batteries rather than a lithium ion cell, and reduces your reliance on single-use AA batteries. Cons: Not the speediest. It takes about 6 hours to fully charge the supplied 4 x AA RecyKo AA batteries. It’s also not as quick as other portable chargers when used as a power bank due to the 1A USB output.
Biolite Charge 20
Price: £40 Weight: 166g Capacity: 5,200mAh Dimensions (L x W x D): 108 x 44 x 20mm
The smallest power bank on test, the Biolite Charge 20 weighs under 200g and slides easily into a It has a 5,200mAh capacity – enough for about two smartphone charges. It is easy to operate. There’s just a single button that lights up a four-LED indicator telling you how much juice is left. There’s one micro-USB input and one 2.1A USB output, offering fairly swift charging. The stainless steel housing is sleek and durable, while a flip-top lid helps to protect the ports from dirt and moisture. The Charge 20 has an IPX6 rating, offering resistance to rain and spills. It is supplied with its own charging cable.
Pros: Lightweight, compact and durable. Just slip it into a and head out into the hills for peace of mind, knowing you can keep your phone alive throughout the day. Cons: Single outlet port and limited battery capacity means this little guy reaches his limits when it comes to charging bigger devices.
Goalzero Venture 70
Price: £136.95 Weight: 485g Capacity: 17,700mAh Dimensions (L x W x D): 170 x 103 x 29mm
The Goal Zero Venture 70 is a seriously rugged, waterproof power bank with an IP67 rating. It has a fairly generous 17,700mAh capacity – enough to charge a smartphone five times (though the manufacturer quotes up to six charges). The two high-speed 2.4A USB outputs can charge two devices simultaneously.
The Venture 70 also has a Smart charge feature that can identify different devices. It then applies the fastest charging profile possible, without risk of overheating or overcharging. It also allows pass-through charging. That means you can safely charge devices from the power bank even when it’s plugged into the mains. We also liked the built-in 65-lumen LED torch, which has two brightness settings and three strobe modes, including SOS.
Pros: Packed with useful features and some sophisticated internal tech. The extremely rugged, waterproof housing with integrated cables makes the Venture 70 a very practical option for the great outdoors. Cons: It’s the heaviest power bank in this round-up, and also the most expensive. If you really want to get the best out of the product you’ll need to read the instruction manual. That explains how to initiate the Smart charge sequence whenever you plug in a device for the first time.
Zendure A6PB
Price: £80 Weight: 392g Capacity: 20,100mAh Dimensions (L x W x D): 168 x 85 x 28mm
Zendure’s A6PB cutting-edge power bank is equipped with USB-C and 3.0A USB outlet ports for Rapid charging of two devices simultaneously. It has a generous 20,100mAh capacity, enough to fully charge an iPhone X 5½ times. We found that real-world performance matched the manufacturer’s claims. It also offers pass-through charging. Auto-detection means that devices start to charge as soon as they are plugged in. Adaptive charging automatically adjusts the output to charge your device at optimum speed. The A6PD also has in-built protection against short circuits, power surges, overheating and overcharging. It comes with a protective cloth pouch and USB cable.
GP Batteries M-Series MP15MA
Price: £34.99 Weight: 347g Capacity: 15,000mAh Dimensions (L x W x D): 140 x 75 x 24mm
With USB-C and twin 2.4A USB outputs, the GP Batteries M-series power bank supports the latest devices and offers speedy charging. You can charge up to three devices simultaneously. The 15,000mAh capacity gives a real-world performance of about four to five smartphone charges (though the manufacturer quotes six). It’s very simple and easy to use – a single button with four LED indicator lights and device auto-detection means you can just plug in and go. It is supplied with a 2-in-1 micro-USB and USB-C cable.
Pros: Striking a good balance between capacity, weight and size, this is a versatile all-rounder at a competitive price. For us, it’s the best value option in this test. The triple outlet ports are very useful, while USB-C input/output supports the latest devices and permits Rapid mains charging. Cons: Though the case features anti-slip rubber coated edges that may help to absorb minor impacts, the power bank does not carry an IP rating. Nor is it supplied with a protective pouch.
Outdoor Tech Kodiak Plus 2.0
Price: £59.99 Weight: 290g Capacity: 10,000mAh Dimensions (L x W x D): 123 x 88 x 28mm
Thanks to its IPX7 rating, this power bank by Outdoor Tech can be submerged in 3ft of water for up to 30 minutes. That makes it well-suited to the most demanding conditions. It also has a built-in 100-lumen torch with three light settings – another useful feature for the great outdoors. The design is compact and relatively lightweight, while the 10,000mAh capacity gives you real-world performance of a little over three full smartphone charges. However, although there are two USB outlet ports, only one of these supports high-speed charging. The Kodiak Plus 2.0 does not have charge-through capability either.
Pros: Very rugged construction and simple operation. We also like the bright LED flashlight for use around camp. Cons: While the 2.4A USB output is speedy, the slower 1.0A port is sluggish compared to the multiple high-speed charging options of other power banks here.
Anker Powercore 20100
Price: £34.99 Weight: 353g Capacity: 20,100mAh Dimensions (L x W x D): 173 x 67 x 26mm
This slim-line power bank has two 2.4A USB outputs for high-speed charging, augmented by Anker’s PowerIQ Smart charge and voltage boost technology. This identifies your device and adjusts voltage output accordingly, while also compensating for cable resistance. It’s all intended to deliver the fastest possible charging speed, even when charging two devices simultaneously.
Real world performance was very good. The large 20,100mAh capacity gives five to seven smartphone charges, depending on the model. The Powercore 20100 also has built-in protection from power surges and short circuits. It comes with a micro USB cable and a travel pouch.
Pros: Slim design, simple to use and good performance. High battery capacity and competitively priced too. Cons: We wish it had a USB-C port. The only other real drawback is that the plastic case is not IP-rated against impact or moisture, meaning it’s not as tough as some other power banks we tested. Basically, don’t drop it or let it get wet!
Ravpower Xtreme RP-PB41
Price: £36.99 Weight: 459g Capacity: 26,800mAh Dimensions (L x W x D): 178 x 85 x 27mm
This Ravpower Xtreme power bank boasts triple 2.4A USB ports so you can charge three devices simultaneously at high speed. An impressive array of built-in technology protects against overheating, overcharging, short circuits and power surges. It also automatically adjusts charge output and voltage for optimum charging speeds. It’s incredibly simple to use, with a single button that displays a four-LED power indicator to let you know how much juice you have left. Not that you’re likely to run out, given the whopping 26,800mAh battery capacity. That gives you nine full charges for the iPhone X, which is impressive. It is supplied with a micro-USB cable and a travel pouch.
Pros: Huge battery capacity, multiple outlets, high-speed charging, easy to use and very well-priced. Cons: Inevitably, this power bank is fairly heavy. We also wish it had a USB-C port – though the latest 26800mAh Ravpower model (the PB058) has added this feature. Our only other negative is that this power bank isn’t IP-rated, so it isn’t as tough as some.
WakaWaka Power With Solar Panel And Link
Price: Power £49.99, Solar panel and link £79.99 Weight: Power 165g, Solar panel and link 751g Capacity: Power 3,000mAh, Solar panel and link max 10W output Dimensions (L x W x D): Power 125 x 83 x 21mm, Solar panel (folded) 170 x 170 x 28mm
A compact and lightweight power bank with an integrated solar panel that can fully recharge its 3,000mAh internal battery in 12-18 hours of sunlight. The WakaWaka Power has a single 2.1A USB output and a micro-USB input (so you can charge it from the mains too). In addition, the Power has a 70-lumen LED torch with four brightness settings and SOS mode. The 3,000mAh capacity gives you about 200 hours of light or one full smartphone charge, and charging speed is fairly swift. The power bank has a swivelling base that enables you to place it at almost any angle. This is ideal for positioning it as a camp lantern or adjusting the solar panel to ensure it is in direct sunlight.
To boost the capability, you can also add a separate folding solar panel with a max 10W output. It connects to the Power via a link box. This also has a second USB port so you can charge another device simultaneously. Setup is simpler than it sounds, and the Power’s LED indicators tell you how much juice it has left as well as how effectively it is charging from the sun.
Pros: It has a useful LED light and enough juice to give your smartphone a full charge. When coupled with the separate solar panel and link, its capabilities are drastically increased for off-grid trips. The 10W panel has a bigger output than any other solar charger we tested. Cons: The Power is obviously limited by its small 3,000mAh capacity, though WakaWaka also sell 5,000 and 10,000mAh power banks that are compatible with the solar panel and link. However, the key drawbacks of the system are cost and weight. Though it has a big 10W output, the solar panel is heavy, while the total cost of the Power, solar panel and link is nearly £130. And like all solar-powered systems, you’re obviously reliant on several hours of sunshine to get optimum results. The panel itself delivers solid performance though.
Freeloader Sixer Plus Supercharger Solar Panel
Price: Sixer £69.99, Supercharger £49.99 (or buy together as the Off Grid Adventurer bundle for £110) Weight: Sixer 250g, Supercharger 311g Capacity: Sixer 6,000mAh, Supercharger max 5W output Dimensions (L x W x D): Sixer 134 x 83 x 30mm, Supercharger 275 x 180 x 15mm
Another compact and relatively lightweight power bank with an integrated solar panel that can fully recharge its 6,000mAh internal battery in 28 hours of sunlight. However, with the Supercharger solar panel attached, charge time is reduced to around 8 hours, or 6 hours if all the solar panels are in direct sunlight. The Freeloader Sixer has a 2.1A USB output as well as integrated micro-USB and lightning cables, enabling up to three devices to be charged simultaneously.
Pros: Easy to use thanks to the LCD screen’s clear icons that indicate remaining battery life and charging source. We liked the integrated charging cables too. The 5W Supercharger solar panel is impressively thin and light. It also comes with Velcro straps to attach it to a rucksack. The solar cells are efficient enough to charge even in overcast conditions. That makes the system a good option for off-grid adventurers – provided you’ll see some sun. Cons: The integrated support stand used to position the Sixer is flimsy and snapped on test. Though marketed as impact- and water-resistant, it does not carry an IP-rating. It does have a rubberised cover to help protect against damage, but this needs to be removed to use the integrated charging cables.
Powertraveller Extreme Solar – Best In Test
Price: £115 Weight: Extreme 280g, Solar panel 284g Capacity: Extreme 12,000mAh, Solar panel max 5W output Dimensions (L x W x D): Extreme 140 x 78 x 28mm, Solar panel (folded) 275 x 180 x 15mm
This combination battery and solar charger kit consists of two components. There’s a 12,000mAh capacity power bank and a separate folding solar panel of clamshell design that delivers a max output of 5W. The power bank has a 2.0A USB output as well as a USB-C port and, uniquely among the power banks in this test, a 12V DC outlet. This makes the Powertraveller a versatile option for charging multiple devices quickly, from SLR cameras and GPS devices to the latest smartphones. It’s housed in a tough, rugged, waterproof case with an IP65 rating, meaning it is dust-proof and waterproof (though not immersible). The power bank also supports pass-through charging and is supplied with an array of cables to fit various devices.
The solar panel is compact and lightweight. It unfolds to 210 degrees and will charge in low light conditions. A flashing LED light shows green for optimum charging, red for lower-quality conditions. Handily it also comes with a Velcro strap that enables you to attach the panel to a rucksack.
Pros: Very versatile thanks to multiple outlets, including USB-C and a 12V DC output. Decent battery capacity gives up to five full smartphone charges. This is also the toughest solar charger on test, making it our preferred option for multi-day wilderness trips. Cons: Few drawbacks other than the standard proviso that applies to all solar-powered products – you’re obviously reliant on several hours of decent sunshine to get good performance. However, even when used as a standard power bank the Powertraveller performs extremely well.
A Short Guide to Overcharge Protection in Power Banks
In this digital age, most of us rely on our smartphones to stay connected. We use them to check emails, surf the web, and connect with our loved ones. Our phones are constantly by our side. With all that usage, they can quickly run out of power. That’s where power banks come in. They’re small, portable devices that can charge phones on the go. And while they’re incredibly convenient, they can easily overcharge devices.
Overcharging can lead to leaking or irreparable harm to gadgets. It can even cause an explosion of the battery. Overcharged batteries can also squirt chemicals, causing injury. Here’s a short guide to understanding overcharge protection, and how to choose a power bank that includes it.
What is overcharge protection in power banks?
Overcharge protection is a feature that prevents a power bank from overcharging an electronic device. As the device charges, the overcharge protection feature prevents more electricity from entering the battery. This ensures the device’s battery doesn’t get damaged or overheat.
All power banks come with some form of overcharge protection to pass safety regulations. However, overcharge protections are not created equal. Some power banks have more advanced protections than others—like RAVPower power banks.
When a power bank is plugged into a device, the protection circuitry monitors the voltage and current going in and out of it. If it senses that too much current is being drawn or that the voltage is getting too high, it will automatically shut off the power bank to prevent damage to the device’s battery. This type of protection is important because lithium-ion batteries can get damaged if they are overcharged.
When you connect your iPhone, tablet, or laptop to a RAVPower Portable Charger, the power bank will automatically detect how much current it requires and stop the charging process when the device is fully charged. This way, it cuts down power usage.
Whether you have new or old devices, it’s crucial to use a power bank with overcharge protection. If you’re not sure a particular power bank has this feature, check the product description or contact the manufacturer.
Safety Tips for Using Power Banks
A portable power bank like the RP-PB231 can be a lifesaver. But it’s important to use it safely or you could end up with a damaged device. Here are four safety tips to help you make the most of your power bank:
- Read the instructions that come with your power bank carefully. Every model is different, and it’s important to know how to use yours safely.
- Find a power bank with safety protection features. These features include short circuit protection, overcharge protection, overvoltage protection, and temperature control. These features keep your devices safe as they are being charged.
- Pay attention to the battery level of your devices. Don’t try to charge a device with a full battery. Also, don’t leave your devices charging overnight or unattended.
- Avoid using knockoff power banks as most do not meet safety standards. Buy from a trusted brand like RAVPower and get a power bank that comes with a warranty.
What Degrades a Battery?
Batteries gradually lose their capacity to store energy. This can happen naturally over time or it can be accelerated by improper device usage. The most common symptoms of battery degradation are a decrease in the device’s run time and an increase in the amount of time it takes to charge the battery. So what causes battery degradation in devices?
- Temperatures: Temperatures on both ends of the spectrum normally affect the performance of a battery. Overheating can cause a battery to swell and eventually burst while cold temperatures can cause a battery to lose its charge more quickly.
- Charge Cycles: Every battery has a lifetime, and it is majorly affected by the charge cycles. Charge cycle refers to a battery’s expected life, and the number of charge cycles affects it more than the passage of time. Each time a battery is charged and discharged, its chemistry changes a little bit. Over time, these small changes add up and can reduce its capacity to store energy.
- Overcharging: If you leave your device plugged in after it’s fully charged, the battery will slowly wear down. This is because a regular charger continues to send power to the battery even after it’s reached its maximum capacity. The battery will start charging slowly and its lifespan will decrease. This is why most people don’t like leaving their devices unattended as they charge. But with overcharge protection, there is no need to worry.
Recommended Power Station Power Bank
For High-Speed Charging, Get the 26800mah Power Bank: RP-PB41
Looking for a power bank for your new phone that can also charge other devices? Get this RAVPower portable charger. It can juice up Bluetooth headphones and speakers, navigators, multimedia players, Smart watches, fitness bracelets, tablets, compact photo and action cameras, book readers, and even some laptops.
Its equipped with three output ports, allowing you to simultaneously charge up to 3 devices at once. With a total current output of 5.5A, each device connected to it will charge fast. And thanks to its massive 26,800mAh battery, you can enjoy 9 days of usage before recharging it.
This RAVPower power bank comes with 4 ports: 2 standard USB ports, a MicroUSB port, and a USB Type-C port with iSmart 2.0 technology. It identifies the characteristics of connected devices and intelligently allocates the power output, optimizing the charging time and the current delivered.
For Portability, Get the Compact Ravpower Power Bank with Overcharge Protection: RP-PB231
Designed for on-the-go use, this portable power bank won’t take up much room in your hand, wallet, or purse. It is one of the smallest 15000mAh power banks on the market and can charge up to three devices at once. Its charging speed is impressive. It can take an iPhone from 0 to 50% in just 30 minutes.
UL-certified li-ion batteries guarantee ultimate protection. The power bank offers temperature control, over-discharge protection, overcharge protection, and short-circuit protection, ensuring superior performance and safety for your devices. It also doesn’t take long to recharge. You can recharge it in just 4.7hrs, saving your precious time.
Protect Your Devices from Overcharging with a RAVPower Power Bank
Power banks come in all shapes and sizes, but what you should FOCUS on when buying one are its features, not just the design. Get a power bank with advanced overcharge protection features and prolong the lifespan of your devices.
What is a Power Bank?
Battery anxiety is a real thing. How many times have you been caught with zero power? Typically, our devices always die at the most critical of moments. Our lives are dependent on mobile technologies; they have changed the way we work and play beyond all recognition. Whilst battery life has improved over the years, our use of devices has also skyrocketed. Dare anyone check the time spent daily on their smartphone? Despite power-efficient developments most of us find ourselves charging items almost daily to help us stay connected.
We charge at home, at work and in our cars – praying that the dreaded low battery symbol doesn’t pop up. Having spent a fortune on low quality charging devices for every scenario we may find ourselves in and, subsequently, every single one of them breaking or not giving us 100% power, there has got to be a better solution.
Enter, the power bank, sometimes known as a charging bank. These compact bricks of seemingly endless power have the capacity to keep our batteries topped up for days. However, with so many variables across capacity, charging speed, and connectivity it can be hard to decide which power bank is best for your needs.
In this guide, we cover everything there is to know about power banks so you feel confident as a buyer and a user.
Undertanding power bank efficiency
Think of a power bank as a rechargeable portable battery. They are designed to facilitate the recharging of your devices on the go when you don’t have access to a mains supply or have your regular wall charger with you. Power banks range in size, from sleek and compact to larger high-capacity units. However, even the super mighty power banks are sophisticated and portable.
Power banks can be used to charge any device that is battery operated. This can include smartphones, tablets, wearable tech, cameras, console controllers, headphones and even laptops. With MAGFAST Extreme, our beast of a powerful portable bank, you can even jump start your car! Yes, really.
You can find out more about how to make your phone charge faster via our guide today.
How does a power bank work?
You can charge your power bank using a USB connection via a mains supply, or wirelessly if enabled. The charge is then stored in the power bank until it is withdrawn when you use it to charge a device. Whilst the capacity of each power bank is different, they eliminate the need to carry a regular, mains-power charger with you because power banks can store enough energy for multiple charges.
Whilst power banks may appear unassuming, there is complex circuit technology stored inside. Besides recharging your devices, they also have safety features to prevent overcharging and short-circuiting, as well as quick charging and wireless technology.
Power bank capacity
All power banks are different even though, on the surface, many look similar. Typically, when it comes to discussing power bank batteries, units will fall into one of two categories focused on lithium technology. All power banks use rechargeable batteries, but one may use lithium-ion whereas another may use lithium-polymer. The most significant difference between the two types is the chemical electrolyte between their positive and negative electrodes. This boils down to lithium-ion holding a higher power density and a lower cost compared to lithium-polymer. However, lithium-polymer batteries are more robust, flexible, and have a lower chance of suffering with leaking electrolyte.
Both forms of battery work effectively and have their pros and cons. However, it will largely depend on the design and manufacturing of a power bank as to whether it delivers the charge you need.
Below, MAGFAST highlights the most important points to consider when purchasing a new power bank.
How is power bank capacity calculated?
Power bank capacity is measured in milliampere hours (mAh). The higher the number of mAh the more charge the power bank holds for you to withdraw when you use it to charge your devices. Once the power bank capacity has been drained it will need to be charged up again. The general rule of thumb dictates that smaller power banks have a typical capacity of 1,000 mAh and medium units have 3,000 to 5,000 mAh. Larger power banks can reach 10,000 mAh.
What sets MAGFAST apart from other power bank manufacturers is our ability to deliver serious power. MAGFAST Life is our neat, portable power bank that is great for life ‘on the go’. Whilst its counterparts have an average capacity of 1,000 mAh, Life has a capacity of 6,000 mAh. That’s enough power to charge a dead iPhone battery twice.
At the opposite end of the scale is MAGFAST Extreme – the one that can jump-start your car. Extreme is a super-charger with the power to boost your battery life for days due to its staggering 18,500 mAh capacity. It is also the world’s first portable charger with three Qi wireless charger stations – ideal for all your devices or when sharing with family or friends.
Both MAGFAST Life and Extreme have four ways to get power in. Life has five ways to get power out whereas Extreme has six: the added bonus of Extreme is the 12volt 500amp outlet. This means you can use MAGFAST Extreme to jump-start your vehicle over, and over, and over again. Simply invest in MAGFAST’s 12v jumper cables to accompany Extreme and you can rest assured you’ll never be stranded with a dead vehicle battery.
Whilst Extreme has the endurance to provide you with power for days, there are different power banks available with MAGFAST to suit your capacity requirements.
Do I need a phone power bank?
Do you often find yourself running out of phone battery during the day? Are you sick of having to hunt for a mains-power socket when the dreaded warning pops up? Having a charged smartphone is important, particularly when on the go. There are an immense number of scenarios when we need to stay connected, such as for meetings, directions, studying, or socializing. Power banks enable you to charge your device on the go without the need for a mains supply, whether you’re in the car, on the train, at the airport, or even on an airplane.
Can I take my power bank on a flight?
Taking your power bank on a flight is acceptable. However, there are conditions in place for the safety of crew and passengers.
- Power banks must be stored in your hand luggage
- The battery should be 100 Wh or under
- Batteries between 100 Wh and 160 Wh will need a special permit
- The Wh output should be visible on the device
MAGFAST’s super-charger, Extreme, has a 68.45 Wh battery, making it perfectly fine to use on an aircraft as long as it is stored in your carry on. All of MAGFAST’s power banks, including Life, Extreme, Apple Watch charger Time and car phone charger MAGFAST Road can be taken onboard.
Wireless charging power bank
Qi is the most popular type of wireless charging and it is the universally agreed global standard. This is why all of MAGFAST’s power banks facilitate Qi wireless charging of your enabled devices. You can find out more about the most popular cell phones in relation to wireless charging via our comprehensive guide.
Qi can provide you with the ability to charge your devices anywhere, any time. Qi devices and Qi chargers are undoubtedly the most celebrated technological advancement of the past decade as people yearned for a more convenient way of charging their device’s batteries that was cable- and clutter-free. Qi wireless charging means you can boost your battery at home, in the office, or car, whilst also providing the ability to power up on the go in coffee shops, at hotels, and airports.
What makes MAGFAST’s products so unique is they offer all the above in terms of Qi wireless charging, whilst also providing unparalleled battery power and complete portability. Simply ensure the power bank of your choice is energized and you’ll be able to charge wirelessly on the go.
USB power bank
Power banks aren’t magic, but they do have technology aboard that is simply miraculous. They need charging to do their job so we can’t simply eliminate the need for a wired power source altogether. Furthermore, at MAGFAST we appreciate that not everyone owns wireless devices, and it’s important that everyone can experience our unique power banks and other charging products.
When shopping for a new power bank you should ensure it has the input and output ports that you need. Today, we are blessed with numerous ways to deliver and withdraw power.
MAGFAST’s power banks are super simple to charge, and you won’t need any extra wires to do so. There is our wireless charging function, as well as the ability to plug in a USB-C cable or micro-USB. Lastly, you could magnetically snap a product – such as MAGFAST Life – to the likes of MAGFAST Road to charge up your portable power supply whilst on the go via the 12v car input.
I need a power bank with outlet
With MAGFAST’s power banks there are a minimum of four ways to charge up your battery source. In terms of using MAGFAST’s portable power banks to charge your devices, there are a minimum of five ways to boost your battery. There’s also an added extra with MAGFAST Extreme and Life – there’s also a hidden built-in mini-cable that comes free with any power bank. This is supplied as a USB-C cable. However, micro-USB and Lightning cables are available as extras directly from MAGFAST.
You might not notice our USB-C mini-cable at first. It’s neatly stored in our beautiful casing and has a magnetic closure so you can simply snap it back into position when not required. It was important for us to include a USB-C connection as it is recognised as one of the most common charging connections for many devices. Should the neat mini-cable attachment not be enough, a longer output cable can be plugged into the MAGFAST USB-C fast charging outlet. There’s also the USB-A output as standard and the 12v hi-intensity supply with Extreme only.
MAGFAST is unlike any other power bank manufacturer. We are dedicated to developing products that not only deliver on style, power and portability, but that also give our customers exactly what they need from a power bank.
Do you need a fast-charging power bank?
Remember the days when it took all night to charge your smartphone? Or when you had to keep your laptop constantly plugged in? Fast charging has changed the game and allowed us to go from zero to a full capacity battery charge in no time at all. It all boils down to voltage and amperage. Manufacturers can tweak either of these elements – subsequently upping the total wattage – to make a device charge quicker. The higher the wattage the quicker the charge.
You may have noticed that some of the chargers accompanying your devices have ‘fast charge’ displayed on them. This is great, but what happens if you need a quick boost of energy whilst out and about? What if you don’t have your fast charger with you? Or a plug socket? This is where MAGFAST’s power banks shine. All MAGFAST’s products are supplied with fast charge technology. This means you can not only use your power bank to charge on the go, but if you have a fast-charge compatible device it will do so super quick.
How do I know if my device can fast charge?
Your device can only withdraw as much energy from a power bank as the charging circuit within it is designed for. If you have a smartphone with a circuit built for 5V/1A, it will not handle the wattage of 5V/2A and won’t charge any quicker than usual. You will be able to check the fast-charging standard of your device by looking at the specifications or user manual.
Never worry about running out of battery ever again
We are sure that, one day, you’ll be able to charge your devices with your own pulse – or something equally mind-boggling. Until then, power banks are a pivotal solution for delivering power time and time again to keep your devices charged on the go. Gone are the days of battery anxiety. Now, as a true power bank expert, you can make an informed decision on the best solution for you. We don’t mean to be biased, but with MAGFAST changing charging for good, we know our power banks can deliver above and beyond your needs.
Power Bank FAQs
How much is a power bank?
There is no set price for a power bank. However, investing in a high-quality power bank will ensure you can charge your devices for years to come. You can pick up a cheap power bank for just a few s but why run the risk of the power bank breaking or damaging your device when there are tried and tested solutions available. Opting for a MAGFAST power bank gives you peace of mind that you’re buying a power bank that is technologically and visually perfect.
MAGFAST power banks vary in price, from 99 for MAGFAST Life to 249 for MAGFAST Extreme. All of our products are designed to work together, so you can easily create a bespoke MAGFAST charging experience by investing in our other products too. A neat solution, the MAGFAST Family Pro Kit (297) contains Life, Extreme, Road, Air, two Walls and a myriad of accessories. If you were to buy all the components of the MAGFAST Family Pro Kit separately, that would total 606 – and that’s without the cost of added accessories! By investing in the MAGFAST Pro Kit you will be saving over 300! If you’re serious about charging and want more options than a stand-alone power bank, then the Pro Kit collection is for you
Does MAGFAST offer an Apple power bank?
All MAGFAST’s power banks are compatible with Apple devices, from iPhones to iPads and beyond. MAGFAST Time is a genius piece of kit, providing a power bank solution for portable wireless charging of the Apple Watch.
Does MAGFAST offer an iPhone power bank?
MAGFAST’s power banks can be used with the iPhone 8 and all later handsets, as well as newer smartphones from all major brands. However, it is worth bearing in mind that wireless charging can only take place if your smartphone is wireless enabled. If not, it’s no issue, since all of MAGFAST’s power banks have multiple ways of charging up your device thanks to the handy output choices.
What is the best small power bank to buy?
Without a doubt, MAGFAST Life is the best small power bank on the market. Whilst most.sized power banks only have a capacity of 1,000 mAh, Life has a capacity of 6,000 mAh. This means six times more power packed into a product that is perfect for on the go charging.
Can I create my own bespoke MAGFAST charging solution?
MAGFAST’s products are equipped with amazing magnetic technology. This means each MAGFAST family charger can be connected with another to create a charging solution that suits your needs perfectly. Whether you use your MAGFAST power bank separately or connected with another MAGFAST component, you will receive the same unmatched power and durability wherever you are.