1).Rechargeable high volume Lithium-ion Battery 800mA. 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)42 mm x (W)25 mm x (H)6.5 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 …