Key Specifications/Special Features: High energy density Flexible in mechanical dimension Wide temperature range: -20 - 60 deg. C Long cycle life 2.7V-4.2V operation Low internal impedance Customized design Safety and environment friendly Nominal capacity: 180mAh Nominal voltage: 3.70V Impedance: < = 150 mohms Charging voltage (approx.): 4.2 +/- 0.05V Discharging current (max): 360mAh Dimensions (T x W x H): (5.80 +/- 0.2) x (12.0 +/- 0.5) x (35.0 +/- 0.5)mm Cycle life: > 400 cycles Self-discharge: < 8% per month Operating temperature range: Charge: 0 - 45 deg. C Discharge: -20 - 60 deg. C Storage: -20 - 40 deg. C Energy density: Volume: 280Wh/L Weight: 160Wh/kg Weight (max): 21.0 +/- 0.5g