Anyone who uses a smartphone knows the importance of carrying a backup battery pack. But try searching for one on Amazon, say, and you’re likely to feel overwhelmed by the vast number of options. Besides the various charging specs, ports, and even cables you have to consider, there are a ton of competing brands. How are you supposed to know which ones actually live up to their promise?  

We’ve done the legwork for you, evaluating a wide range of power banks from different manufacturers, costing different prices, and some offering unique features. Our testing is extensive, too, subjecting the packs to real-world usage (read about our testing process in detail below). Our picks below reflect a range of needs. (You might also be interested in our our roundup of USB car chargers if you spend a lot of time in transit.)

Updated 9/17/2021 to include our review of the RAVPower Portable Power Station 252.7Wh Power House—a compact off-grid power source that’s perfect for weekend getaways. Given its sub-$200 price and better-than-average efficiency, it’s our new pick for best portable power stationScroll to the bottom of this article for links to all of our power bank reviews.

Best overall power bank

Building on the success of the Powerstation Plus XL (our previous pick for best overall power bank), Mophie’s Powerstation XXL matches its predecessor in efficiency, achieving 92.51 percent of its stated maximum current, plus it’s stylish, portable, and affordable at $69.95. It’s a no-brainer recommendation if you’re in the market for a dependable power source on-the-go. (Read our full review of the Mophie Powerstation XXL.)

Best budget power bank

The combination wall charger and portable power bank format makes the Powercore Fusion 5000 exceedingly convenient. The bank itself can be recharged via either method—power outlet or MicroUSB port. It’s limited to two USB-A ports for device charging, but that doesn’t dimish its great handiness-to-cost ratio. (Read our full review of the Anker Powercore Fusion 5000.)

Most portable power bank

Small enough to fit into a coat pocket or the side pocket on a backpack, the Tronsmart Presto is an obvious companion when you’re on-the-go. It’s a 10,000mAh (37Wh) pack, with two USB-A ports, one with QC3.0 for fast charging. (Read our full review of the Tronsmart Presto PVT10.) 

Best power bank for road warriors

If you spend a lot of time on the road and value device preparedness, the Sherpa 100AC makes a trusty, if pricey, companion. Yes, at $299.95, you’re looking at a big investment. But that buys you two USB-C ports capable of fast-charging speeds, two standard USB ports, a Qi wireless charging pad, a standard U.S. 110V outlet, a full complement of cables, and a nifty status display and buttons for controlling various functions of the pack. The pack itself can be charged in just a couple hours. (Read our full review of the Sherpa 100AC Portable Power Bank.)

Best USB-C power bank with Power Delivery 

Sporting the sort of sleek yet rugged exterior you’d expect from Otterbox, the Fast Charge 20,000mAh is both handsome and utilitarian. Its USB-C port with Power Delivery can be used to charge other devices or the pack itself. Both it and the USB-A port are capable of 18W output. The pack’s 92.55 percent efficiency is among the best of the USB-C battery packs we’ve tested. (Read our full review of the Otterbox Fast Charge 20,000mAh.)



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