... practical USB innovation! *Simple, reuseable power *USB battery = rechargeable battery + battery charger *1.2 V USB Rechargeable AA Battery1)Built in intelligent charger, charge by any ... be charged by approved Chargers.3)Widely used as common AA battery in your MP3, controller, PDA, etc. (1450mah,1.2v)How ... *315mm *G.W:6.3kg *N.W.:5.1kg USB Rechargeable AA Battery