The built-in protection PCB guards against overcharge

Charging should be this simple. Our AA USB rechargeable lithium battery comes with a built-in TYPE-A/USB plug — pull it out, align it with a USB port, plug it in, and charging begins. No charger, ever. With 1500mWh of capacity and constant 1.5V output, it reliably powers remotes, toys, cameras, wireless mice, electric toothbrushes and any other AA device. The built-in protection PCB guards against overcharge, over-discharge, overcurrent and short circuit, and with 1,000+ recharge cycles, one battery outlasts ten dry cells — saving money and the environment.