3.7v 4000mah 4500mah 4800mah Cell 21700 Lithium Ion Batteries

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Product Detail

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Quick Details

Warranty: 1year
Anode Material: NCM
Chargeable: Yes
Application: Toys, Power Tools, Home Appliances, Consumer Electronics, BOATS, Golf Carts, SUBMARINES, Electric Bicycles/Scooters, Electric Folklifts, electric vehicles, Electric Wheelchairs, Electric Power Systems, Solar Energy Storage Systems, Uninterruptible Power Supplies
Battery Size: 21700
Brand Name: BTW
Certification: CE, UN38.3, MSDS, CB,BIS
Model Number: 21700 40PC 45EC
Place of Origin: Jiangxi, China
Weight: 69±2g
The charging ratio: 1C

The discharge rate: 5C 3C
Storage Type: Temperature 20℃~25℃; Relative humidity:0~45%RH
Material: 18650 batteries
Type: For battery pack
Battery type: NCM battery batteries
Cycle life: 800 times at 8O% by 1c/3c
Voltage: 3.7v~ 4.2v
Discharging Rate: 5C 3C
Charging Rate: 1C
Internal resistance: ≤25mΩ(AC Impedance, 1000 Hz)
Keywords: 3.7v 4000mah 4500mah 4800mah lithium-ion batteries


High Energy Density: Lithium-ion batteries have a high energy density, meaning they can store a large amount of energy in a small and lightweight package. This makes them ideal for portable devices.

Long Cycle Life: Lithium-ion batteries have a long cycle life, meaning they can be recharged and used many times before needing to be replaced. This makes them a cost-effective solution for devices that require frequent charging.

Low Self-Discharge: Lithium-ion batteries have a low self-discharge rate, meaning they retain their charge for a long time when not in use. This makes them ideal for devices that are used infrequently.

No Memory Effect: Lithium-ion batteries do not have a memory effect, meaning they can be charged and discharged at any time without affecting their overall capacity.

Wide Operating Temperature Range: Lithium-ion batteries can operate in a wide temperature range, making them suitable for use in both hot and cold environments.

Overall, the 3.7V 4000mAh lithium ion batteries are a reliable and efficient power source for a variety of devices due to their high energy density, long cycle life, low self-discharge, lack of memory effect, and wide operating temperature range.

Supply Ability

Supply Ability: 80000 Piece/Pieces per Day

Packaging & Delivery

Packaging Details: Each 21700 battery is separated into the inner box by a knife card and then loaded into the outer box.
Port: Shenzhen


Q1. Who are we?
A:We are based in Jiangxi, China, start from 2017, sell to Domestic Market(20.00%), Wester Europe(15.00%), SouthemEurope(11.00%), Oceania(10.00%)North America(8.00%).Mid East(8.00%), Eastern Europe(5.00%), Eastern Asia(5.00%).Africa(5.00%), Northern Europe(4.00%), South Asia(4.00%), South America(2.00%), Southeast Asia(2.00%), Central.
America(1.00%).There are total about 501-1000 people in our office.

Q2.How can we guarantee quality?
A: Always a pre-production sample before mass production; Always final Inspection before shipment.

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