ICR18650 - Besomi, 4Ah, 3.7V, Li-Ion Battery

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