Sony Ericsson Standard Battery BST-38 930mAh Sony Ericsson T650i; K770i; K850i; S (Wireless Phone Accessory)
Not to be confused with the original Sony Ericsson battery that came with the phone when you buy - Dimensions (L x W x H) 40.8 x 40 x 5.5 mm and covered with adhesive film. This original Sony Ericsson battery, probably more of a (bad) licensed produc