Parameters:
Size: 21700 (21mm diameter x 70mm long)
Type: Li-ion (Rechargeable)
Nominal voltage: 3.60V
Nominal capacity: 4000mAh
Max. Discharge CC: 80A
Charging temperature range: 0-50°C
Discharging temperature range: -20-80°C
Recommend storage temperature: -30-25°C