High-quality cell with long lifespan and high cycle stability. Protection/PCB with short circuit, overcharge, and deep discharge protection. Seiko (Made in Japan). Designed for use in flashlights, LEDs, battery carriers, etc. Keeppower 18650 Lithium-Ion battery with PCB protection.

Capacity: 3200 mAh
Min. Capacity: 3100 mAh
Nominal Voltage: 3.6 V - 3.7 V
Charge End Voltage: 4.2 V
Discharge End Voltage: 2.55 V
Positive terminal raised (Button Top)
Max. Discharge Current: 3C = 10 A
Integrated PCB protection circuit: 10 A
Charging method: CC-CV
Diameter: 18.60 mm ± 0.15 mm
Height: 69.4 mm ± 0.15 mm
Weight: 49 g ± 1 g

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 do not suffer from memory effect. They operate on the basis of lithium and are characterized by high energy density.

Technical Data for "Keeppower 18650 - 3200 mAh, 3.6 V - 3.7 V Li-Ion battery with PCB protection":
Normal Charging Current: 0.xx - 1000 mA
Charging Time at 1550 mA: approx. 4 h
Fast Charging Current: 1000 - 2000 mA
Charging Time at 2000 mAh: approx. 3 h
Operating Temperature for Charging: 0 °C - 45 °C
Operating Temperature for Discharging: -20 °C - 60 °C

Notes: Charging lithium-ion batteries requires a special charger that charges the batteries using a specific charging method (CCCV = constant current, constant voltage). The batteries must not be charged above a voltage of 4.2 volts, as this poses a risk of fire and explosion. It is advantageous to charge the batteries only up to about 4.1 volts, as this significantly increases their lifespan or number of charge cycles (potentially up to doubling). Only lithium-ion chargers should be used for charging. However, cheap chargers sometimes have the disadvantage of not shutting off safely after the charging process is complete.