Famous China brand BAK N18650CK 3000mAh 3.7V 18650 battery cell

The 18650 battery is the gasoline of the 21st century, Lithium-ion is the most promising chemistry of all batteries. Li-ion manufacturers have a regular cycle of improvements, and goals to reach energy density needed for full-adoption seem achievable.

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Electric bicycle

Electric motorcycle

Electric tricycle

Electric boat


Energy storage

RC toy

Led light

Street light


Medical Equipment



The 18650 (18mm by 65mm) battery is a size classification of lithium-ion batteries. If you have ever held one in your hand, you probably noticed it is the same shape, but a bit larger than a AA battery. AA batteries by comparison are sometimes called 14500 batteries, because they have a 14mm diameter and 50mm height. Cylindrical lithium-ion batteries all follow the same nomenclature, their name being determined by their size (diameter, followed by height).


Warning: Lithium ion batteries may explode or burn due to improper use. Using these batteries for purposes not intended by the manufacturer, including outside a battery pack and/or without a BMS, may cause severe injury and damage. We are not responsible for any injuries caused by lithium ion batteries - use at your own risk.



BAK N18650CK





Max.discharge current:


Nominal capacity:

3000 mAh

Nominal voltage:

3.6 V

Discharge end voltage:

2.5 V

Charging voltage:

4.20 +/- 0.05 V

Standard charging current:

1.50 A


49.0 g


The energy storage battery is applicable for commercial or residential purposes.

Electric vehicles - HEV, P-HEV, EV

Laptops, smart-phones

E-cigarettes, vaporizers, & MODs

Powertools, cordless tools, gardening tools

Digital cameras, games, MP3 players

Shavers, toothbrushes

Energy storage both commercial and home


RC cars, UAVs, drones, quadcoptors

Industrial machines, industrial stationary

Medical machinery

And more...

All batteries are verified and tested and guaranteed genuine before shipping.


Do not short –circuit battery by your device itself.

Do not use different charger. Do not use cigarette jacks (in cars) for charging.

Do not charge with constant current more than maximum charge current.

Do not disassemble or reconstruct the battery.

Do not throw or cause impact.

Do not pierce a hole in the battery with sharp things such as nail, knife, pencil or drill, etc.

Do not use with other batteries or cells.

Do not solder on battery directly.

Do not press the battery with overload in manufacturing process, especially ultrasonic welding.

Do not use old and new cells together for packing.

Do not expose the battery to high heat such as fire.

Do not put the battery into a microwave or high pressure container.

Do not use the battery reversed.

Do not connect positive (+) and negative (-) with a conductive materials such as metal, wire, etc.

Do not allow the battery to be immersed in or wet with water or sea-water.

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