Specificatoins of TP4056 18650 Li-ion USB Type-C Battery Charger Module - 1A, w/ Protection:

• 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

Features of TP4056 18650 Li-ion USB Type-C Battery Charger Module - 1A, w/ Protection:

1. Ampere meter can only be connected to a 5v input end of the module.

2. It is better than the charging current is 37% of the battery capacity. If you charge the battery of 1000mAh, a current of 400mAh is enough.

3. The connection wire should not be too thick.

4. Make sure the connect point is good.

5. If the input voltage is too high, like 5.2v, the current will be less than 1000mA, it is normal. It is protection function, auto-subtract the charging current to avoid burn damage to the chip.

6. NO Reverse polarity.

How to Use TP4056 18650 Li-ion USB Type-C Battery Charger Module - 1A, w/ Protection:

Connect Type C cable for power, or 5V DC to pads marked IN+ and IN- on the left-hand side of the module

Connect cell to charge to B+/B- pads on the right-hand side of the module.

A load (something for the battery to power) can be connected to the OUT+/OUT- pads on the right-hand side

Important! Disconnect load when charging

The red LED indicates charging in progress, the green LED indicates charging has finished.