Keeppower batteries have gained high popularity for a long time, not only among flashlight enthusiasts, thanks to their high quality standards and premium components. The 3500 mAh battery uses a quality industrial cell from Panasonic NCR18650GA as its base cell. The Keeppower 18650 lithium-ion battery is PCB protected (with a raised positive terminal) and equipped with Seiko (Made in Japan). The protection/PCB includes short-circuit, overcharge, and deep discharge protection, making it suitable for almost all flashlights. Keeppower 18650 batteries are particularly recommended for flashlights, LEDs, and mechanical battery holders.

Please check the dimensions of the cell before purchasing! Due to the built-in electronics, the cell is not suitable for every application! The height and diameter are larger than a standard 18650 cell without PCB.

Typical capacity: 3500 mAh
Min. capacity: 3350 mAh
Nominal voltage: 3.6 V - 3.7 V
Charge termination voltage: 4.2 V ± 0.05 V
Discharge termination voltage: 2.5 V
Charge current/charging time: 0 - 1500 mA / 3.5 h
Raised positive terminal (Button Top)
Max. discharge current: 10 A
Chemistry: LiCoNiAlO2 (ICR)
Integrated PCB protection circuit up to 10 A
Charging method: CC-CV
Diameter: 18.65 mm ± 0.10 mm
Height: 69.12 mm ± 0.15 mm
Weight: 48 g ± 1 g

Safety notice: Please note that removing or damaging the protection electronics (PCB) can lead to a short circuit, fire development, or explosion.

Additional features: Lithium-ion batteries are thermally stable and do not suffer from memory effect. They operate on the basis of lithium and are characterized by a high energy density.

Notes: Charging lithium-ion batteries requires a special charger that charges the batteries according to a specific charging method (CCCV = constant current, constant voltage).