The Best USB Battery Packs and Power Banks Buyer‘s Guide

Over the past two years, we’ve considered nearly 300 USB battery packs (also known as power banks) and spent hundreds of hours testing more than 40 of them to find the ones that offer the best value and reliably keep gear charged. The credit-card-sized TravelCard Charger has consistently been our go-to battery to give a smartphone a partial charge to make it through the day. The Jackery Bolt is just a little bigger and provides one to two full smartphone charges, and it has convenient built-in cables. Our larger pick, the Anker PowerCore 20100, can charge your phone every day for a week or keep a fleet of devices going for shorter stints. And for Android devices that are Quick Charge–capable, we found that the medium-size Tronsmart Presto 10000 PBT10 will provide really fast Quick Charge 3.0 speeds at a good price. (If you already have a device with a USB-C port, you’ll get the fastest charging and future-proof tech from dedicated USB-C battery packs instead.)

 

1.For everday carry Jackery Bolt 6,000 mAh Ultra-Compact External Battery Charger

 $27* from Amazon

The integrated Micro-USB and Lightning-connector cables make it convenient to carry every day, for every device. The aluminum body is the size of a bar of soap, and the Bolt has enough power to charge a midsize smartphone twice.

2.More Power Anker PowerCore+ 20100 USB-C

$66* from Amazon

The Anker PowerCore 20100 has enough power to recharge a tablet and two smartphones on a long flight, or a smartphone a day for nearly a week. It’s about the size of two decks of cards lined up end to end.20100mAh External Battery, 6A Output Type-C Port for Macbook, Nexus, Nintendo Switch & PowerIQ for iPhone iPad & Samsung.

3.For Quick Charge–compatible devices Tronsmart Presto 10000 PBT10

$20.99* from Amazon

The Presto is the best one-size-fits-all battery pack if your Android device supports QC 3.0 and you need faster charging. It’s about the size of most midsize smartphones, but it has enough capacity to recharge such a phone about three times.

 

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