USB-Rechargeable AAA Battery Kit

This is a kit of USB-rechargeable AAA batteries that work in place of disposable AAAs. Each cell holds about 400 mAh and recharges by USB, so you stop buying throwaway batteries.

It powers everyday AAA devices, remotes, flashlights, toys, small electronics, and recharges hundreds of times, saving money and keeping spares ready for an emergency.

Use them like normal AAA batteries. When they run down, recharge them by USB rather than tossing them. The kit charges from any USB port via the included cord.

By USB, with a full charge in about 1.5 hours. Plug into a wall adapter, computer, power bank or solar charger.

Yes. They're sealed lithium-polymer rechargeable cells, safe to use and charge indoors. Follow the included instructions and avoid damaging the cells.

Each cell holds about 400 mAh and is rated for around 500 charge cycles, so it replaces hundreds of disposable batteries over its life. Battery performance varies based on charging and usage conditions. See the footnote for details.

Unlike disposable AAAs, these recharge by USB instead of being thrown away, and unlike older NiMH packs they refill from any USB source without a special charger.

It depends how many AAA devices you run; a kit covers a few devices, and keeping extra sets means you always have charged spares on hand.