An ultra-small, 1A charging board for 3.7V lithium batteries with USB Type-C power input and LED charge indicators Input interface: Type-c USB For single 3.7V lithium battery, full 4.2V Application： DIY lithium battery charging; Small electrical appliance magic; Installing a charging port on a tablet computer；Suitable for various types of 3.7V lithium batteries, including 18650 and composite batteries. 20pcs TP4057 Type-c USB 5V 1A 18650 Lithium Battery Charger Module Charging Board with Dual Protection Functions over TP4056 (20pcs TP4057 Type-c USB)

Specifications

1. Up to 1A Programmable Linear Charging Current

2. For single 3.7V lithium battery, full 4.2V

3. Constant current/constant voltage charging with over-temperature protection

4. Soft start to limit surge current with battery reverse protection

5. Low power standby, prolong battery life

6. Dual output of charging status, no battery and fault status display

7. Can be activated at 0V, 2.9V slip current charging

8. Operating temperature -40~80℃

9. Input voltage range 4.2V~6.5V

Description：

TP4057 1A 3.7V Lithium Battery Charging & Discharging Board

TP4057 Charging & Discharging in One Board

Type-C USB C Li-ion Battery Charging Board

Constant current/constant voltage charging with over-temperature protection

Dual output of charging status, no battery and fault status display

Note:

1. The battery cannot be connected backwards, as it can easily damage the motherboard.

2. The battery terminal voltage should not exceed the product overshoot voltage.

3. Batteries cannot be connected in series, they can only be connected in parallel. The battery of parallel can be several, but not recommend too many.

Package included:

10 * TP4057 1A Lithium Battery Charging & Discharging Board with Protection