High-quality cell with long lifespan and high cycle stability. Seiko Protection/PCB with short circuit, overcharge, and deep discharge protection. Designed for use in flashlights, LEDs, battery carriers, etc. Keeppower 18650 lithium-ion battery with PCB protection. Please check the dimensions of the cell before purchasing! Due to the built-in electronics, the cell is not suitable for every application. Height and diameter are larger than a standard 18650 cell without PCB.

Cell: Panasonic NCR 18650 B
Capacity: 3400mAh
Min. Capacity: 3300mAh
Nominal Voltage: 3.6V - 3.7V
Charge Cut-off Voltage: 4.2V ± 0.05V
Discharge Cut-off Voltage: 2.75V
Positive Terminal: flat (Flat Top)
Max. Discharge Current: 2C = 6.8A
Chemistry: LiCoO2 (ICR)
Protection Circuit PCB: integrated 10A
Charging Method: CC-CV
Diameter: 18.60 mm ± 0.15 mm
Height: 67.8 mm ± 0.15 mm
Weight: 48 g ± 1 g

Test Results: Lygt-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 based on lithium and are characterized by a high energy density.

Technical Data for "Keeppower 18650 - 3400mAh, 3.7V Li-Ion Battery Protected (Flat Top)":
Charge Current: 1650mAh/3h
Fast Charge Current: 2000mAh/2.5h
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 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 advisable to charge the batteries only up to about 4.1 volts, as this significantly increases their lifespan and number of charge cycles.