Top 20 Best USB Power Banks For Phones & Tablets

A BATTERY CHARGER, or recharger, is a device used to put energy into a secondary cell or rechargeable battery by forcing an electric current through it.

The charging protocol (how much voltage or current for how long, and what to do when charging is complete, for instance) depends on the size and type of the battery being charged. Some battery types have high tolerance for overcharging (i.e., continued charging after the battery has been fully charged) and can be recharged by connection to a constant voltage source or a constant current source, depending on battery type. Simple chargers of this type must be manually disconnected at the end of the charge cycle, and some battery types absolutely require, or may use a timer, to cut off charging current at some fixed time, approximately when charging is complete. Other battery types cannot withstand over-charging, being damaged (reduced capacity, reduced lifetime), over heating or even exploding. The charger may have temperature or voltage sensing circuits and a microprocessor controller to safely adjust the charging current and voltage, determine the state of charge, and cut off at the end of charge.

Slow battery chargers may take several hours to complete a charge. High-rate chargers may restore most capacity much faster, but high rate chargers can be more than some battery types can tolerate. Such batteries require active monitoring of the battery to protect it from overcharging.

A POWER BANK is a portable device that can supply power from its built-in battery through a USB port. Power banks are popular for charging USB charged devices. They can also be used as a power supply for various USB powered devices such as lights and small fans. They usually recharge with a USB power supply. The power bank includes a control circuit that both regulates charging of the battery and converts the battery voltage to 5.0 volts for the USB port. Some chargers for cells like 18650s and 26650 can also serve as a power bank. Although it is generally more cumbersome to carry such a charger with cells rather than a conventional power bank, this type of setup has the advantage of being able to charge cells for other uses. It also has the advantage that, when the cells are dead, they can be swapped for fresh cells for immediate use rather than having to be recharged first.

Power Bank News, Reviews & Resources

• 12 Best Portable Chargers for All of Your Devices - "Keep your phone, tablet, laptop, and other electronics running with these handheld power banks."
• Anker’s biggest battery pack ever is a 43-pound power station with impressive specs - "Six AC, 100W USB-C, 1229Wh LiFePO4 battery."
• Anker’s four-port 120W power brick is built for the USB-C warrior - "It’s got some quirks, but it should be a decent travel tool or home charging hub."
• Anker’s new double-thick MagSafe battery is all about the mAh - "If you took one look at the first wave of modular magnetic wireless charging battery humps for the iPhone and thought, “Wake me up when they give us more than one full charge!” — then Anker may have the battery pack for you. The new Anker 633 Magnetic Battery, now available for $80 on Amazon, has twice the capacity at 10,000mAh. That’s enough to charge an iPhone 12 twice or an iPhone 13 Pro up to 1.8 times, according to Anker."
• Apple just launched an official $99 MagSafe battery pack for the iPhone 12 lineup - "Apple has released battery cases for iPhones in the past, but the new pack attaches to the iPhone 12 phones thanks to embedded magnets. And it will work with all four of the phones in the iPhone 12 family — the iPhone 12, iPhone 12 Mini, iPhone 12 Pro, and iPhone 12 Pro Max."
• APPLE MAGSAFE BATTERY PACK REVIEW: CONVENIENCE OVER CAPACITY - "Perfectly designed for the iPhone, but not a lot of charge."
• Apple's MagSafe Battery Pack: Everything You Need to Know - "Apple in July unveiled its rumored MagSafe Battery Pack, introducing an add-on battery that's designed to work with the iPhone 12, iPhone 12 mini, iPhone 12 Pro, and iPhone 12 Pro Max. Priced at $99, the MagSafe Battery Pack provides extra battery life for theiPhone 1 lineup and it also has a few nifty features, such as a reverse wireless charging option that lets it be charged through the iPhone."
• Apple’s MagSafe Battery Pack can charge iPhones faster with a new firmware update - "You can wait for an update over the air, or plug a Lightning to USB cable from the pack to a connected Mac or iPad to get the fix, and then you’re off to the races, as they say."
• Apple's MagSafe Battery Pack has more capacity than it seems - here's why - "The MagSafe Battery Pack appears to have a tiny capacity when examining its milliamp-hour rating, but that isn't the whole story. Here are the battery ratings and what they mean to users."
• Battery charger - Wikipedia.
• Best power banks of 2021 - "The top USB portable chargers for your phone." PCWorld.
• best USB power banks for phones & tablets - "Consider first how much time you'll be spending away from wall outlets."
• Elecjet’s graphene power bank is as exciting as a power bank can be - "Which is 'not very,' but it’s still pretty great."
• FBI warns consumers not to use public phone charging stations - "The FBI is warning consumers against using public phone charging stations in order to avoid exposing their devices to malicious software. Public USB stations like the kind found at malls and airports are being used by bad actors to spread malware and monitoring software, according to a tweet last week from the FBI’s Denver branch. The agency did not provide any specific examples. 'Carry your own charger and USB cord and use an electrical outlet instead,' the agency advised in the tweet."
• How to charge your phone abroad with no plug adaptor - "When you are travelling internationally and do not have a travel plug adaptor with you, there still might be a way to charge your phone."
• How To Choose Best Power Bank - "3 Things You Should Know When Buying A Power Bank."
• Ikea’s $39.99 pad adds built-in wireless charging to almost any table - "The Sjömärke puts a Wireless Qi charging hotspot underneath the surface of your wood or plastic furniture."
• IKEA's latest wireless charger appears to be a portable model - "But with a 6,500mAh battery and 5W charging rate, we wouldn't get too excited."
• iPhone 12 reverse wireless charging can power up Apple’s new MagSafe battery pack - "Plug in your iPhone 12 and it can charge the external battery too."
• Power Bank - Wikipedia.
• State of charge - Wikipedia.
• Tested: MagSafe charging speed versus Qi, USB-C & USB-A - "We put Apple's MagSafe charger to test to see how fast it truly is, and see how it compares to USB-C, Qi, and USB-A. Even this long after MagSafe's introduction, there are questions, theories, and rituals that users have, regarding wireless versus wired charging. Evaluating the combinations is simple, and the answer of which is best depends very much on any given user's situation and hardware."
• The first real photos of Apple’s MagSafe Battery Pack are here - "It’s a chonk."
• USB-C TravelCard Review - "A Tiny Emergency Charger for Travelers."
• USB Power Supply - Wikipedia.

Top 20 Best High-End Power Banks

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• Anker 633 Magnetic Battery - 10,000mAh Foldable Magnetic Wireless Portable Charger, Only for iPhone 13/13 Pro / 13 Pro Max / 12/12 Pro and 12 Pro Max. Compact and Powerful: The 10,000mAh small-sized battery contains enough power to charge an iPhone 13 Pro 1.8 times.
• Anker PowerCore 5000 - "The Ultra-Compact Portable Charger."
• Anker PowerCore 20100 - "High-Speed, Long-Lasting Portable Power. 7 Phone Charges. 2 iPad mini Charges."
• Anker PowerCore+ 26800 PD with 30W Power Delivery Charger - "Portable Charger Bundle for MacBook Air / iPad Pro 2018, iPhone XS Max / X / 8, Nexus 5X / 6P, and USB Type-C Laptops with Power Delivery. High-Speed Charging with USB-C Power Delivery. Over 7 Phone Charges."
• Anker PowerCore Fusion - "Portable Charger 5000mAh with Dual USB Wall Charger, Foldable Plug and PowerIQ, Battery Pack for iPhone, iPad, Android, Samsung Galaxy and More."
• Anker PowerCore Lite 10000mAh - "USB-C Input (Only), High Capacity Portable Charger, Slim and Light External Battery for iPhone, Samsung Galaxy, and More."
• Anker PowerCore Lite 20000 - "Portable Charger, Ultra-High Capacity 4.8A Output Power Bank, External Battery."
• Anker PowerCore+ Mini, 3350mAh Lipstick-Sized Portable Charger - "(Premium Aluminum Power Bank), One of The Most Compact External Batteries, Compatible with iPhone Xs/XR, Android Smartphones and More."
• Anker PowerCore Slim 5000 - "Ultra Slim 5000mAh External Battery with High-Speed Charging Technology, Pocket Friendly Power Bank, Perfectly designed for Smartphones."
• Anker PowerCore Speed 20000 PD - "20100mAh Portable Charger & 30W Power Delivery Wall Charger Bundle, Type C Power Bank for MacBook Air/iPad Pro 2018, Nexus 5X / 6P, iPhone 8 / X, MacBooks and more."
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• Apple MagSafe Battery Pack - "The MagSafe Battery Pack makes on-the-go, wireless charging easy and reliable—just attach it to your iPhone 12 or iPhone 12 Pro. Buy now at apple.com."
• Aukey 10000mAh Power Bank - "A sleek, slimline 18W power bank with USB Power Delivery output, Quick Charge USB output, and AiPower USB output to charge all your USB-C and USB-powered gear. Fully charge an iPhone X 2.5 times, Samsung Galaxy Note8 2 times, or iPad Air 2 0.9 times. Powers your Nintendo Switch for an extra 6 hours of play."
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• Byblos TRAVEL POWER BANK - since 1967. "A stylish and compact coated canvas case designed to carry with a power bank 8000mAh wherever you go. It features a metallic press stud to embellish its minimalist design. Its specific orange colour was created exclusively for our collection. Battery power: 8000mAh. Apple and Android compatibility. Heritage monogram coated cotton canvas. Suede Lining. Silver metal features. Width: 8.5cm. Depth: 3cm. Height: 14cm. Made in Italy."
• EasyAcc 20000mAh Portable Charger - "Fast Recharge External Battery Pack Charger with 4A 2-Port Input 4.8A Smart Output High Capacity Power Bank for iPhone iPad Samsung Android - Black and Orange."
• EasyAcc 26000mAh Power Bank - "4 ports super capacity power bank with 4A input and 4.8A smart output. This power bank is innovatively designed with dual input ports which make it possible to be fully charged within 8 hours. 4 USB ports with highest up to 4.8A output enables the power bank to charge 4 devices simultaneously. 26000mAh high capacity can charge iPhone 6 for 10 times and Samsung S6 for 7 times."
• iMuto 30000mAh Portable Charger X6 - "3-Port USB Output Power Bank External Battery Packs for iPhone 7, 7 Plus, 6S Plus, Samsung Galaxy S8, Note 8, iPad, Nintendo Switch, Tablets and More."
• Jackery Bolt 6000mAh Portable Power Bank - "Power bank with built in Lightning Cable [Apple MFi certified] iPhone Battery Charger External Battery Pack, TWICE as FAST as Original iPhone Charger."
• Mi Power Bank Pro 10000mAh - "18W fast charging both ways. Whether it's charging others or getting charged, 10000mAh Mi Power Bank Pro moves fast. With up to 18W fast charging, it intelligently adjusts power output to safely charge each connected device."
• Mophie Powerstation XL - "Made for smartphones, tablets, and other USB-C and USB-A compatible devices." Talk, play and browse longer than ever with the new mophie powerstation universal battery. This 15,000mAh portable battery is packed with more power than ever with two additional charges on your smartphone. Two USB ports let you charge multiple devices.
• POWERADD Pilot Pro3 - (Dual Inputs, 3 Outputs) 30000mAh Portable Charger Compatible with iPhone XS/XR/X/8/8P, iPad, Samsung, LG, Nexus,Tablets and More.
• RAVPower 22000mAh portable charger - "External Battery Pack, 22000 Power Banks 5.8A Output 3-Port (2.4A Input, iSmart 2.0 USB Ports, Li-polymer Phone Charger) For Smartphone Tablet."
• Sherpa 100AC Portable Power Bank - "Sleek and powerful, the Sherpa 100AC is your go-to source for versatile power while on the move. Airline approved and travel ready, the 94.72Wh power bank is equipped with innovative features like wireless charging, high-speed Power Delivery, and a variety of ports to power phones, tablets, DSLR cameras, and laptops - including power-hungry MacBooks."
• Solar Charger RAVPower 15000mAh Outdoor Portable Charger - "Solar Power Bank Dual USB External Battery Pack Power Pack with Flashlight (IPX4 Splashproof, Dustproof, Solar Panel Charging, DC5V/2A Input)." Endless Charging Under the Sun: Portable battery pack charges whenever it's sunny thanks to the wide solar panel.
• TravelCard Charger - USB-C TravelCard - "The TravelCard is a credit-card sized travel battery for iPhone and Android charger ... USB-C Version. The first slimline portable charger with a charge and sync feature. Charge ..."
• Tronsmart Trim 10000mAh USB-C Power Bank - "Ultra Slim 10000mAh External Battery With Latest USB Power Delivery Technology, Pocket Friendly Power Bank, Perfectly designed for Smartphones, including iPhone Xs, iPhone Xs Max & iPhone XR, Google Pixel 3/Pixel 3 XL and other mobile devices, i.e. Tablets, Cameras, GoPros, Portable Fans, Portable Speakers, etc."
• ZMI PowerPack 10K - "Smallest Lightest 10000mAh Battery Pack Fast Charging Portable Charger Pocket Power Bank for iPhone iPad Samsung (Nexus Pixel 2/XL Require Special Cord) Phone Cords Sold Separately."