Pda battery pack,this is a 1 cell lithium polymer rechargeable battery for sony clie 65, peg-t400, peg-t415, peg-425, peg-600c, peg-t615c, peg-t650c, peg-t665c series pdas.This battery ships fully charged, tested and ready to work.This energy+ item is built with the highest quality standards. Specifications: energy+ part: lis1228. Brand: energy+. Type: lithium polymer. Voltage: 3.7. Capacity: 750 mah. Color: silver grey. Size: 1.92 X 1.17 X 0.22. Contacts: wire leads connector.