Specifications:
1).Rechargeable high volume Lithium-ion Battery 500mA.
2).100% brand new. With protection circuit board.
3).It has a plug, you don't need any soldering skill to replace the battery now!
4).Product size:(L)40 mm x (W)25 mm x (H)4.9 mm.
5).Product voltage:3.7V(nominal) & 4.2V(full voltage).
6).Can be used in MP3 MP4 GPS PSP PAD and a variety of electronic readers.
7).Charging connection port 1.25mm 2 Pin Micro Connector Plug