【LED INDICATORS MANAGEMENT】When charging, the green LED will blinks and will then LED remains on once it is fully charged
【DITCH DISPOSABLE BATTERY】Rechargeable usb D battery with 1000+ cycles , save your big money comparing with the single use batteries
【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
【VARIOUS SAFEGUARDS】Incorporated safety mechanism shields Battery from excessive discharge/charge. Charging halts once fully charged. Complies with CE, ROSH, 2006/66/EC.
【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