Product Features

1. Small volume. Smaller than similar products.

2. 4.5-5.5V power supply, applicable to a single lithium battery (unlimited in parallel), with a maximum of 1.2A. It can be used to stabilize 1A current as required.

3. Applicable to all types of 3.7V lithium batteries, including 18650 and aggregate batteries.

4. With overshoot and over discharge protection, the over discharge protection is 2.9V, and the charging cut-off voltage is 4.2V!

5. When there is no external input voltage, it will automatically switch to the output mode, supporting small current, output 5V, and output about 450mA. If 1a is output, the voltage will be about 4.9V-4.5V according to the power situation.

6. Automatically switch the input and output, and charge the battery when the external voltage is input. Otherwise, when discharging, the charging green light flashes, the full green light stays on, the light does not light when discharging without load, and the blue light is on when discharging with load. Standby power consumption is about 0.8mA.

Instructions

Usage Method

The module can be used by connecting the positive and negative electrodes of 3.7V lithium battery. The module itself has overshoot and over discharge protection, and the lithium battery can also be added with a protection board.

Type-C port, solder hole and reserved input/output interface on the back are the same. The line is directly connected, so there is no difference between the three groups of interfaces.

Function Introduction

*When the charging current drops to 100mA after reaching the final floating charge voltage, the charging cycle will be automatically terminated.

*The maximum charging current is 1.2A. When the power supply is guaranteed, it can be stable by more than 1.1A when used properly.

*When the battery voltage is lower than 2.9V, the battery will be precharged with a current of 200mA.

*With protection board, overvoltage protection, over discharge protection, overcurrent protection. Over discharge protection value: 2.9V.

*Connect the power supply to activate the protection board for the first time.

Matters Needing Attention

*Do not connect the battery in reverse, connect the reverse burning plate.

*Connect the charging head before connecting the battery, and test whether the charging lamp of the module displays normally.

*The wire should not be too thin. If the power supply current cannot keep up, the wire must be welded

*Batteries can be connected in parallel, not in series. Only 3.7V lithium battery, full of about 4.2V.

*This product is not intended to be a power bank. Its power is relatively small, with a maximum of 45 watts. And there is no charging protocol. It may cause problems in the use of some mobile phones, so when it is used to modify the power bank, our store will not be responsible for the use problems of some mobile phones.

Use Q & A

1. Where is the product used?

A: low power electrical equipment, backup power circuit, DIY modification.

2. Is input/output switching seamless?

A: switching takes about 1-2S.

Product Introduction

When the charging current drops to 100mA after reaching the final floating charge voltage, the charging cycle will be automatically terminated.

When the battery voltage drops below 4.05V (approximately corresponding to 80% - 90% of the battery capacity), the charging cycle is restarted.

When the battery voltage is lower than 2.9v, the battery will be precharged with a current of 100mA.

With protection board, overvoltage protection, over discharge protection and over-current protection. Over discharge protection value: 2.4V; Overcurrent protection value: 4A.

For initial use, the power supply shall be connected to activate the protection board.

Small volume

Support type-C interface power supply, compatible with most PD fast charging heads

1A current linear charging

With protection board function

Input voltage range: 5 ~ 6V

Output voltage: 4.2V

Charging current: 1A