Nowadays it is impossible to conceive a life without smartphones and mobile devices that constantly help us make payments, find streets, restaurants and any other type of information, also representing a good percentage of our daily entertainment.

Of course, these activities involve a considerable consumption of the device battery, greatly reducing the canonical 24 hours of use of a smartphone.

External batteries, or power banks, are useful devices especially for those who spend most of the day away from home since they allow access to a variable energy supply based on its nominal capacity, available for any USB device.

Here we have selected the best Power Banks for you. These can be a great present for a person who’s mobile charging is always low.

SaleRANK NO. 1
Anker Portable Charger, PowerCore Essential 20000mAh Power Bank with PowerIQ Technology and USB-C (Input Only), High-Capacity External Battery Pack Compatible with iPhone, Samsung, iPad, and More.
  • Ultra-High Capacity: The massive 20,000mAh capacity provides more than 5 charges for iPhone XS, almost 5 full charges for Galaxy S10, more than 3 and a half charges for Huawei P30, and over 2 and a half charges for iPad mini 5.
  • Advanced Charging Technology: Anker's exclusive PowerIQ and VoltageBoost technology combine to deliver an optimized charge to your devices, while the trickle-charging mode is the best way to charge low-power accessories.
  • Simultaneous Charging: Twin USB ports allow you to charge two devices at the same time. The USB C port cannot charge other devices.
  • Certified Safe: Anker's MultiProtect safety system ensures complete protection for you and your devices.
  • What You Get: Anker PowerCore Essential 20000 power bank, Micro USB cable, travel pouch, welcome guide, our worry-free 18-month warranty, and friendly customer service. (USB-C cable, Lightning cable, and wall charger not included)
RANK NO. 2
Portable Charger Anker PowerCore 20100mAh - Ultra High Capacity Power Bank with 4.8A Output and PowerIQ Technology, External Battery Pack for iPhone, iPad & Samsung Galaxy & More (Black) (A1271)
  • The Anker Advantage:Join the 50 million+ powered by our leading technology.
  • Ultra-High Capacity:Weighs as little as a can of soup (12.5 oz) yet charges the iPhone 8 almost seven times, the Galaxy S8 five times or the iPad mini 4 twice.
  • High-Speed Charging: PowerIQ and VoltageBoost combine to deliver the fastest possible charge(does not support Qualcomm Quick Charge). Recharges itself in 10 hours with a 2 amp charger, phone chargers (generally 1 amp) may take up to 20 hours.
  • Certified Safe: Anker's MultiProtect safety system ensures complete protection for you and your devices.
  • What You Get: Anker PowerCore 20100 Portable Charger, Micro USB cable, travel pouch, welcome guide, Lightning cable for iPhone / iPad sold separately.
RANK NO. 3
Portable Charger RAVPower 26800mAh Power Bank Battery Pack Tri-output External Battery Pack Cell Phone Charger Compatible with iPhone 12 Mini Pro Max 11 SE iPad Pro Samsung Galaxy S20 (Black)
  • Choose the RAVPower Portable Charger Treatment: entrusted by 100, 000+ customers For keeping their devices charged when off the grid. Fully Compatible with the latest iPhone 12/ iPhone 12 Mini/12 Pro Max. Weighs as little as a can of soup (16.1 oz) yet, perfect for travel, business, school etc.
  • Colossal Battery Capacity: 26800mAh internal battery capacity USB battery pack almost charges the iPhone 11 Pro Max 4 times, the Galaxy S10 for 5.3 times or the Note 10 for 4.5 times or a tablet 2+ times (Data based on internal lab testing)
  • Multiple Devices Charging: 3 iSmart USB ports provide a powerful total current output of 5.5A ensure charging for three devices simultaneously. ( Note: does not support Qualcomm Quick Charge)
  • Recharge 2X Faster: RAVPower exclusive charging technology to deliver a blazing fast charge to ensure save 50% recharging time, charges in just 13 hours with a 2.4A charger
  • Superior Safety: RAVPower power pack multiProtect technology combines surge protection, short circuit prevention, and more to keep you and your devices safe
RANK NO. 4
RAVPower Portable Charger 20000mAh PD 3.0 Power Bank QC 3.0 18W USB C External Battery Pack Tri-input and Tri-output Cell Phone Charger Battery for iPhone, Samsung Galaxy and More
  • Power for Days: Step into the upper echelon of battery capacity with a muscled 20,000mAh, fully capable of recharging your phone or tablet several times over.
  • The LED indicator displays the available power level of battery pack and charging status intelligently. Know before you go.
  • One for All: Compatibility at its finest, not only ready to charge almost all USB powered devices including laptops, tablets, smartphones and more, but also portable charger can charged by all the cables.
  • Stay Protected: All ports feature complete charging protections alongside RAVPower's comprehensive iSmart technology. Built in UL certified battery cell and complete charging protections make you and your device safer.
  • 2.5x Faster Charging: Powerful 18W PD and QC output for exhilarating charging speeds, do you a great favor in an emergency. Especially bring your new iPhone back to 50 percentage in as quickly as 30 minutes.
SaleRANK NO. 5
iMuto Portable Charger 30000mAh, Qualcomm Quick Charge 3.0 and USB-C Type-C Ports Power Bank External Battery Pack for Samsung Galaxy S10/S9, iPhone 12/11/X/8/7/6/Plus, iPad, Nintendo Switch and More
  • First Portable Charger with Qualcomm Certified Quick Charge 3.0 Technology: Up to 4x faster than standard chargers, it is capable of charging up to 80% of the battery for QC 2.0 / 3.0 compatible devices. Note: It is not pocket-size due to its’ high capacity
  • Type-C/ USB-C Input & Output: Up to 3A input and output with Type-C/ USB-C port, it can quickly charge your devices with Type-C port and recharge the 30000mAh external battery quickly. (Please ensure it is in sleeping mode when you use X6L Pro to charge MacBook Which with USB-C port. Otherwise, the battery pack will not be powerful enough to charge it.)
  • Ultra-High Capacity: iMuto X6L Pro 30000mAh is the highest capacity portable charger with QC 3.0 and Type-C port. The 30000mAh power bank guaranteed with build-in A-Class Lithium polymer batteries is safer to use. Enough capacity to charge 2016 MacBook 2.5 times, iPhone 7 almost 12 times, Galaxy S7 almost 7 times and iPad Air almost 2.5 times. For Nintendo Switch, PLEASE BUY IMUTO USB TO TYPE-C CABLE OR TYPE-C TO TYPE-C CABLE SEPARATELY and it can be compatible after the system upgrades.
  • Digi-Power and iM-Power Technology: Smart digital screen shows remaining power in digital format, and it's hidden until activated. All USB ports detect your device intelligently and deliver the faster charging. X6L Pro fits for almost all USB-powered devices. Note: It may not support devices with small currents under 1A, like some bluetooth headsets, smartwatches and so on.
  • Multiple Smart Protection System: keeps your devices safe from over-charging, over-voltage, over-current and short circuit. What You Get: X6 Pro External Battery Pack, Micro USB cable, Travel waterproof pouch, User guide, our 18-month warranty and friendly customer service.
SaleRANK NO. 6
Anker Power Bank, PowerCore Slim 10000, Ultra Slim Portable Charger, Compact 10000mAh External Battery, High-Speed PowerIQ Charging Technology for iPhone, Samsung Galaxy and More (USB-C Input Only)
  • Slim Size, Big Power: One of the slimmest and lightest 10000 mAh portable chargers on the market. Provides 2.6 charges for iPhone XS, 2.4 full charges for Galaxy S10 and 1.3 charges for iPad mini 5.
  • Versatile Charging: Anker's exclusive PowerIQ and VoltageBoost technology combine to deliver the fastest possible charge for any device, while the trickle-charging mode is the best way to charge low-power devices.
  • Certified Safe: MultiProtect is Anker’s 11-point safety system, providing superior protection for you and your devices.
  • Quality Throughout: With a sleek matte exterior and cool-blue LED light to report battery level, PowerCore Slim 10000 is premium both inside and out.
  • What You Get: PowerCore Slim 10000 portable charger, Micro USB cable (USB-C cable and Lightning cable not included), travel pouch, welcome guide, our worry-free 18-month warranty, and friendly customer service.
RANK NO. 7
Anker USB C Portable Charger, PowerCore Essential 20000 PD (18W) Power Bank, High-Capacity 20000mAh Power Delivery Battery Pack for iPhone 11/11 Pro/11 Pro Max/X/8, Samsung (PD Charger Not Included)
  • The Anker Advantage: Join the 50 million+ powered by our leading technology.
  • Ultra-High Capacity: The massive 20, 000mAh capacity provides more than 5 and a half charges for iPhone XS, more than 4 full charges for Samsung Galaxy S10, and over 2 and a half charges for iPad mini 5.
  • High-Speed Charging: deliver an 18W high-speed charge to phones, Tablets, and more via the USB-C power delivery port or the Qualcomm Quick Charge-enabled USB port.
  • Rapid Recharge: Pair the included USB-C to USB-C cable with an 18W Power Delivery wall charger (not included) to refuel your PowerCore in less than 7 hours. Please note: Recharging with a normal USB wall charger will take approximately 20 hours.
  • What You Get: PowerCore Essential 20000 PD, USB-C to C cable, travel pouch, welcome guide, our worry-free 18-month warranty, and friendly customer service. (USB-A to C cable and Power Delivery wall charger not included.)
SaleRANK NO. 8
Anker PowerCore+ 26800mAh PD 45W with 60W PD Charger, Power Delivery Portable Charger Bundle for USB C MacBook Air/Pro/Dell XPS, iPad Pro 2018, iPhone 12 / Mini / 11/ Pro / XS Max / X / 8, and More
  • The Anker Advantage: Join the 50 million+ powered by America's leading USB charging brand.
  • Huge Charging Power: A 45W USB-C port provides enough power to charge a laptop at full speed, while two 15W USB ports provide optimized charging to phones, tablets, and more.
  • Colossal Capacity: With a massive 26800mAh capacity, you can charge an iPhone X 6 times, a Galaxy S9 5 and a half times, or provide a full charge to a 13-inch MacBook Pro or Dell XPS 13.
  • Rapid Recharge: Use the included wall charger to recharge your PowerCore in less than 3 and a half hours via the USB-C Power Delivery port.
  • What You Get: PowerCore+ 26800 PD, 60W USB-C wall charger, USB-C to USB-C cable, travel pouch, welcome guide, our worry-free 18-month warranty, and friendly customer service.
RANK NO. 9
Anker PowerCore 10000 Portable Charger, One of The Smallest and Lightest 10000mAh Power Bank, Ultra-Compact Battery Pack, High-Speed Charging Technology Phone Charger for iPhone, Samsung and More.
  • The Anker Advantage: Join the 50 million+ powered by our leading technology.
  • Remarkably Compact: One of the smallest and lightest 10,000mAh portable chargers. Provides almost three-and-a-half iPhone 8 charges or two-and-a-half Galaxy S8 charges.
  • High-Speed Charging: Anker’s exclusive PowerIQ and VoltageBoost combine to deliver the fastest possible charge for any device. Qualcomm Quick Charge not supported.
  • Certified Safe: Anker’s MultiProtect safety system ensures complete protection for you and your devices.
  • What You Get: Anker PowerCore 10000 portable charger, Micro USB cable, travel pouch, welcome guide, our worry-free 18-month warranty and friendly customer service. USB-C and Lightning cable for iPhone / iPad sold separately
RANK NO. 10
Anker Power Bank, PowerCore III Elite 25600 PD 60W with 65W PD Charger, Power Delivery Portable Charger Bundle for USB C MacBook Air/Pro/Dell XPS, iPad Pro 2020, iPhone 11/12, and More, Black (A1290)
  • The Anker Advantage: Join the 55 million+ powered by our leading technology.
  • Huge Capacity: With a massive 25,600mAh capacity, you can charge an iPhone 11 more than 5 times, a Samsung Galaxy S20 more than 4 times, or provide a full charge to a 13.4ʺ MacBook.
  • Laptop Charging On-The-Go: If your laptop is running low, just pull out PowerCore to get a high-speed charge wherever you are.
  • Charge 3 Devices Simultaneously: With a 60W USB-C port and two 18W USB ports, PowerCore delivers powerful charging to up to 3 devices at the same time. Note: Both USB ports share a total output of 18W.
  • What You Get: PowerCore III Elite 25600 60W portable charger, PowerPort III 65W Pod wall charger, USB-C to USB-C cable, travel pouch, welcome guide, our worry-free 18-month warranty, and friendly customer service.

Buying Guide – How To Choose the Best Power Bank?

Capacity and Speed

Modern smartphones are getting thinner and if, on the one hand, the design benefits, on the other hand, the battery size is getting smaller and smaller.

At the same time, functions and energy consumption increase and the problem of autonomy often insufficient for the needs of users, especially of those who use it intensively, is not solved.

External batteries represent an effective response, provided that certain factors are taken into account, such as, for example, the capacity expressed in m ah.

If you have a latest-generation smartphone such as an i phone 6, you could choose a very capable power bank with 20,000 m ah that allows you to recharge it even seven times before having to be charged in turn. In this way you can stay calm for days even away from power sources, knowing that you can count on a reliable battery at any time.

Also take into account the charging times of these accessories which are sometimes incredibly long, perhaps too much for your needs.

It is not only important to be able to charge your device several times, but also to do it as quickly as possible. In this case, we must consider the output current from the ports which are expressed in amperes.

Technology

we talked about ports, in the plural, not surprisingly because external batteries with two USB ports and not only one are widespread on the market, ensuring an important advantage and, that is, that of being able to recharge two devices at the same time, ideal if you often go out with more than one smartphone.

Power banks are often technologically very advanced accumulators and the best brand models are those that automatically recognize the optimal energy needed by the two devices connected simultaneously, releasing the adequate one for each.

The advantage is faster and safer charging, both for the devices and for the battery itself.

Without this function, by connecting two smartphones with different powers, the charging times would be longer because the energy would be distributed equally on both ports.

In short, the models equipped with the most modern technology allow a better and safer refill because they adapt better than others to any brand and model that will be refilled with maximum efficiency and speed.

Design and Dimensions

Of the other components that could influence your choice are, of course, the price but also the design and size. The design has its importance from two points of view: firstly, for an aesthetic fact; many companies make particularly attractive models with different colors to improve their appeal.

Secondly, because it is important to have a handy external battery in your hands that does not scratch at the first impact, with a coating that does not leave unsightly fingerprints.

As for the size, the batteries are not the same because they can all go into the glove compartment of the car or bag, but if you want maximum practicality you may prefer those with such a compact design that you can also put them in your pocket.

How to Use an External Battery

Internal Battery Wear

if you consider that these devices lose speed and efficiency over time, it becomes almost impossible to rely on a single recharge to face the day.

Fortunately, there are supports available on the market that can extend the use of your smartphone when no power outlet is available for quick recharging on the fly: these are external batteries.

Compactness and Capacity

they are more or less compact products, depending on the capacity, to be connected via USB cable to your favorite device, thus enjoying an additional battery.

If the first external batteries did not exceed 2,000 m ah, today it is possible to find very large ones, up to 10,000 m ah, which guarantees various recharges, preventing panic situations when the internal battery of the device reaches 1%.

Compatible Devices

before making the purchase you must consider compatible devices. Always look in the product data sheet for the name of your smartphone or tablet to be 100% sure to buy an external battery that is right for you, avoiding wasting money unnecessarily.

The models differ not only in capacity, size, and external appearance but also for the connections that can be USB, mini USB, micro USB up to the most modern USB type-c and the lightning system used by apple.

Recharge One or More Smartphones

Ask Yourself This Question: How Many Devices Do I Always Carry with Me?

Some external batteries are equipped with more than one USB slot, just to meet the needs of those who, for work or for other types of needs, need different smartphones, tablets or even digital cameras.

The ability to connect them all simultaneously to the same external battery is certainly a convenience to consider.

Use

The operation is extremely simple. First of all, make sure to charge the external battery to the maximum. Then leave it overnight connected to your pc or charger if supplied with the product.

To check the battery charge status, there is usually bright le ds. When they are all completely on, you can disconnect it and, without forgetting the connection cables, take it with you. To use it with devices, all you have to do is connect it to them with the appropriate cable.

Never forget to check the status of the external battery before leaving the house, otherwise, you may find yourself with all the devices discharged and without the possibility of recharging them.

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