Nominal voltage 3.60V
End-of-charge voltage 4.20V
End-of-discharge Voltage 2.50V
Typical Capacity 4000mAh (0.2C discharge)
Min capacity 3900mAh (0.2C discharge)
Internal resistance Max:10mΩ （AC 1kHz）
Standard Charge 1500mA,CCCV 100mA cut-off
Charging Time 4.5hours(standard charge)
Quick Charge Current 4000mA
Max Continuous Discharge Current 30000mA
Operating Temperature Charging, 0°C ~ 45°C
Rated voltage：3.7 V
Vapcell 21700 4000mAh 30A
Batteries are sold individually.
Fully charge before first use.
Never short (connect positive and negative size) battery.
Keep them always in battery case, or any other insulating material.
Never keep this battery together with metal objects (short circuit can happen if you do).
Never carry bare cell in your pocket with keys, change or any other metal objects.
Please read the user manual carefully before using this device