Thanks to high quality standards and premium components, Keeppower batteries have long enjoyed great popularity—and not just among flashlight enthusiasts. Equipped with Seiko (Made in Japan) protection circuitry (PCB) featuring short-circuit, overcharge, and deep-discharge protection.
Please check the cell dimensions before purchasing! Due to the integrated electronics, this cell is not suitable for every application!
The height and diameter are greater than those of a standard 18650 cell without a PCB.
Technical specifications for the Keeppower 18650 P1840C lithium-ion battery:
Cell Keeppower 18650 - 4000mAh
Typical capacity 4000mAh Min. capacity 3900mAh
Nominal voltage 3.6V - 3.7V
Charge cut-off voltage 4.2V ± 0.05V
Discharge cut-off voltage 2.5V
Positive terminal Raised (Button Top)
Max. discharge current 8A
Chemistry LiCoNiAlO2 (ICR)
Protection circuit (PCB) Integrated (up to 8A)
Charging method CC-CV
Diameter 18.7 mm ± 0.10 mm Height 69.2 mm ± 0.15 mm
Weight 48 g ± 1 g
A free battery storage case is included with orders of two batteries. Safety note: Please note that removing or damaging the protection electronics (PCB) can lead to a short circuit, fire, or explosion. Additional features: Lithium-ion batteries are thermally stable and are not subject to the memory effect. They operate based on lithium chemistry and are characterized by high energy density.
*A PCB (Printed Circuit Board) is the circuit board containing the electronic circuitry.
A battery management system (BMS)—or simply battery management—is a measure, though usually an electronic circuit, used to monitor, regulate, and protect rechargeable batteries.
