Alonefire 21700 lithium battery 4000mAh 3.7v power electric car battery for mobile power flashlight battery

product description:

Brand: AloneFire

Model: 21700

Weight: 69g/pc

Battery capacity: 4000MAH

Voltage: 3.7V-4.2V

Discharge termination voltage: 2.75V

Maximum charging current: 2000mA

Maximum discharge current: 1200mA

Use warning

1. Do not throw the battery into the fire or heater

2. It is strictly forbidden to use and retain the battery next to the hot 

3. high temperature source, such as fire, heater, etc.

4. It is strictly forbidden to tap or throw, step on the battery

5. It is strictly forbidden to connect the battery directly and negatively with metal directly.

6. Do not immerse the battery in sea water or water

7. Do not connect the battery directly to the power outlet

8. The battery must be equipped with a qualified protection circuit board

Charging warning

1. Must be charged in an ambient temperature range of 0 ° C to 45 ° C

2. Do not reverse the charging of the positive and negative poles

Special charger must be used

Discharge warning

1. Must discharge in the ambient temperature range of -20 ° C to 60 ° C

2. Avoid discharge below 2.75 volts, never put it below 1.0 volts

3. Must discharge within the allowable operating current range

4. Can only be used as an energy source for powering appliances designed for it

Storage warning

The battery must be stored in a dry and low temperature environment