1.Ni-MH-AA ,1.2V ,1450mAh. 300mAh,500mAh,800mAh,1000mAh,1450mAh for your choices. 2. Professional R&D Team.

Product Features:

*Charge anywhere from any accessible powered USB,No charger is needed .

*Easy charge easy go .*Charge batteries before first use.*LED light on showing battery is charging,light off full-charged .*Recommended charge time 5-7hours via USB .*Recharge via powered USB or with an approved NiMH Charger .

Warning : *Do not dispose of in fire . *Do not insert batteries with the (+) and (-) ends reversed .*Do not open ,disassemble ,incinerate or short -circuit .*Never mix  different types or brands of batteries . *Batteries getting warm during charging. Keep out of reach of children .

AA Size USB rechargeable battery