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Tom's Guide's most pocketable pick and a Wirecutter alternative: a 10,000 mAh, 45 W bank that's barely bigger than an AirPods Pro case, with a 3-year warranty, for about $30. Low-star Walmart reviews describe slow or stop-start charging, and it has no built-in cable.
Top complaints
- Slow or stop-start charging
Low-star Walmart reviews describe charging that is very slow, charging that keeps starting and stopping even with a new cable, and a unit that didn't work at all. Tom's Guide's con is lower charging power than its other picks.
- Less than a full phone charge for some
A 1-star Walmart reviewer says it doesn't charge a phone even once.
Source: Walmart reviews (lowest rated) - No built-in cable
It comes with a short detachable USB-C cable instead of a built-in one (Wirecutter). A Walmart reviewer needed a different cord to charge their phone.
What owners love
- Tiny for 10,000 mAh
Tom's Guide says it is barely bigger than an AirPods Pro 2 case. Wirecutter weighed it at 5.6 oz.
Source: Tom's Guide, Wirecutter (phones & tablets) - 45 W and three ports
Two USB-C ports (each 45 W out and 20 W in when used alone) and a 15 W USB-A port (Wirecutter).
Source: Wirecutter (phones & tablets) - Cheap with a long warranty
About $30 with a 3-year warranty and six colors. The included cable doubles as a lanyard (Wirecutter, Tom's Guide).
Source: Wirecutter (phones & tablets), Tom's Guide
- You want a built-in cable rather than a detachable one
- You need laptop-class power
- You want wireless charging
- Concerts, weddings and other no-bag outings
- The most capacity per ounce on a budget
- Fast-charging Android phones (45 W)
Scores (tap for why)
What experts say
- Tom's Guide: Most pocketable portable charger (updated 2026-09-16). The con is lower charging power than other power banks.
- Wirecutter (NYT): Worth considering as a lighter, cheaper alternative to its top pick with two extra ports, if you don't mind a detachable cable instead of built-in ones.