... 7.4v battery for 7",8",9.7",10" tablets 1)Nominal voltage:7.4V 2)Nominal capacity:2400mAh 3)Size:6.4*39 ... in protection, overcharge protection, guarantee safety usage.7. environmental protection requirements: not contain harmful substances ... .0°C-40°CColornature, accordinglyDemension6.4*39*90(mm)Charging life CycleOver 500 timesCertificateCE ... its standby. 2400mah 7.4v battery for 7",8",9.7",10" tablets