Features:
1. Note: The maximum operating current of this battery is only about 1A, can not be used for unmanned aerial vehicles, model aircraft or power tools and other products that require high current.
2. This product interface is 1.25 pitch male, it can be matched with ESP32 Development Board WIFI Kits for Arduino Nodemcu.

Specification:
Standard Voltage: 3.7V
Rated Capacity: 1000mAh
Weight: 17.96g
Working Current: 1.5A
Over current protection: 2~3A
Overcharge limit pressure: 4.25±0.05V
Over-voltage limit pressure: 2.45±0.30V 

Standard Charging Method:

Charging this battery to 4.25V at 0.2C constant current, then charge the battery at a constant voltage of 4.2V till it's charging current≤ 0.05C.
Charge current time: Standard Charging: 0.2C (8 hours); Fast charging: 0.5C (2.5 hours).
The maximum charging current: 0.5C
Continuous Discharge Current: 0.5C
The maximum discharge current: 1C
End-off voltage: 2.75V/pcs
Allowable charging temperature: 0℃ ~ +45 ℃
Allowable discharge temperature: -10 ~ +60 ℃
Allowable storage temperature: -10 ~ +40 ℃( within 3 months); -10 ~ +30 ℃ ( within 6 months).

Packing List:

4 * 1000mAh 902540 3.7V Lithium Rechargeable Battery