Detailed Product Description

high capacity battery holder 18650 3.7v 4000mah

Specifications: 

Charge mode: constant voltage constant current (4.2v)

Nominal Voltage: 3.7V

Maximum charging current: 1CmA (determined according to the actual requirements of the battery)

Maximum discharge current: 2CmA (determined according to the actual requirements of the battery)

Discharge Temperature: -20 °c~ +60 °c

Density: 520Wh/l, 199Wh/kg

Charging time: 3~5hrs (standard) or 2.5hrs (fast)

Charging and discharge time: more than 500 times

Resistance: the protection plate internal resistance is less than 100mΩ, the battery internal resistance of less than 300mΩ

Protection: with overcharge, over discharge, over current, stream over-voltage protection circuit, short circuit protection, over temperature protection

Features:

1. Single battery voltage up to 3.6~3.8v
2. Energy, can be reached to the specific energy of 100-115Wh/kg and 240-253Wh/L
3. Long cycle life, generally can reach more than 500 times, and even 1000 times
4. Safety performance, pollution, no memory effect

5. Small self-discharge, room temerature for a fully charged Li-ion storage kept in a self-discharge rate about 10%

6. Maintenance-free, widely used

7. Suitable for cordless phone...

8. High quality, best price

9. Fast lead time

Applications:

Suitable to cordless phone, solar lighting, electrical drill, shaver, emergency lighting, back-up power, cordless tool, power tool, flashlight, torch, barcode scanner, battery etc.

We can produce it in different permutations and combinations according to your demands!