【MULTIPLE SAFE PROTECTION】Built-in Integrated safety circuit protects Battery from over discharge/overcharge,when the battery is fully charged, it will automatically stop charging,passed the test of CE, ROSH, 2006/66/EC
When charging, the green LED will blink and then stay on when fully charged.
【USB CHARGE DESIGN】No need charger and adapter,fast full charge in about 2 hours,easy to charge with usb cable, just simply plug into USB ports
【ENERGY SAVING & ECO FRIENDLY】Mercury, cadmium and lead are not used in these aa lithium small batteries, saving thousands of alkaline batteries and reducing a significant about of landfill waste
【DITCH DISPOSABLE BATTERY】Rechargeable usb D battery with 1000+ cycles , save your big money comparing with the single use batteries