... pen,4.mobile power,electronic cigarette , etc3.7V Batteries , 3.7V Li ion Batteries, 3.7v Li-ion , 3.7V Lithium Batteries Li polymer ultra thin battery ... and low self-discharge rate No memory effectFlexible custom design 3.7vVoltage 400mAhCapacity 20CDischarge rate Voltage (V)Capacity (mAhDischarge rate (C ... )Size (mm)Weight (g)3.7 V70 mAh15 C5.7*14.5*17.51.83 ...