TP4056 1A Li-Ion Battery Charging Board with Current Protection

The TP4056 constant current-voltage linear charging module for single-cell 3.7 V lithium batteries. During charging and discharging, it will continuously monitor the battery's voltage level and protects against overcharging and undercharging. It features two status outputs, one for charging in progress and the other for charging finished a glowing red LED indicates charging in progress and a glowing green LED indicates charging complete. It also has a programmable charge current of up to 1A.

Specifications:

Charging accuracy (%) 1.5

Charging method Linear

Full Charge Voltage (V) 4.2

Over-Current Protection (A) 3

Under-Voltage Protection (V) 2.5

Input Voltage (V)  4.5-5.5

Rated Power (W) 4.2

Operating Temperature (°C) -10 to 85

Length (mm) 25

Width (mm) 20

Height (mm) 6

Weight (gm) 3