Batteries: 18650 4000mah
Nominal volt/capacity: 4000mah
Charge cut-off volt: 4.2v±0.05v
Discharge cut-off volt: 2.75v±0.05v
Cycle times: over 800s
Temperature: working temperature:-20℃~60℃
storage temperature:-10℃~45℃
Max discharging current: 2C
Standard Charging method: 0.5C CC(constant current)charge to 4.2V, then CV(constant voltage 4.2V)charge till charge current decline to ≤0.05C
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