Energy Cell Energy Cell

This specification defines the characteristics of a rechargeable lithium ion battery manufactured by ENERTECH INTERNATIONAL INC.


Nominal Capacity21.0 Ah
Energy DensityVolumetric312 Wh/ℓ
Gravimetric164 Wh/㎏
Weight≤ 480 g
Nominal Voltage3.75 V
Operating Voltage RangeMax.4.20 V
Min.3.00 V
Standart CurrentCharge10.5 A
Discharge10.5 A
Maximum CurrentCharge63.0 A
Discharge105.0 A
Peak Discharge147.0 A (<10s)
Internal Resistance< 2mΩ
Operating TemperatureCharge0°С ~ 55°С
Discharge-20°С ~ 55°С
Recommend25 ± 3℃
Storage Temperature< 1 month-20°С ~ 55°С
< 1 year0℃ ~ 25℃
Storage Humidity45 ~ 85%RH
Cell DimensionsThickness5.8mm + 0.2 / - 0.4mm
Width253mm ± 1mm
Length172mm ± 1mm