High-quality cell with long lifespan and high cycle stability. Seiko (Made in Japan). Protection circuit with short-circuit, overcharge, and deep discharge protection. Designed for flashlights, LEDs, and battery carriers. Keeppower 26650 lithium-ion battery, PCB protected (short version).

Cell: Keeppower 26650
Capacity: 5200 mAh
Min. Capacity: 5000 mAh
Nominal Voltage: 3.6 V - 3.7 V
Charge Termination Voltage: 4.2 V ± 0.05 V
Discharge Termination Voltage: 2.75 V
Positive terminal raised (Button Top)
Max. Discharge Current (Continuous Load): 10 A
Chemistry: LiMgCo
PCB Protection Circuit: Yes (10 A)
Charging Method: CC-CV
Diameter: 26.80 mm ± 0.15 mm
Height: 69.5 mm ± 0.25 mm
Weight: 93.5 g ± 1 g

Test Results: Lygte-Info
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 26650 - 5200 mAh, 3.6 V - 3.7 V Li-Ion Battery, PCB Protected":
Normal Charge Current: 2000 mA/4 h
Fast Charge Current: 3500 mA/3.5 h
Operating Temperature Charging: 0 °C - 45 °C
Operating Temperature Discharging: -20 °C - 60 °C

Notes: Charging lithium-ion batteries requires a special charger that charges the batteries according to 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 the lifespan and number of charge cycles (potentially doubling it). Only lithium-ion chargers should be used for charging.