4 in 1 Charging / Discharging / Lithium Battery Protection / Battery Level Indicator Module. Lithium battery protection function: over-current, overvoltage, over-temperature, short circuit protection. In discharge mode (The charging mode KEY function is invalid), trigger the KEY port once to open the output; continuously trigger the KEY port twice to close the output. if you accept a small load KEY can be connected to the microcontroller about 20s to provide a low level allows the module to continue working. Trigger mode: low level trigger (ground) The first time the load is connected, the output is automatically turned on. If the load is less than 50MA, the output will be automatically turned off after 30 seconds; if the load is greater than 50MA, the output will be automatically turned on. Allow discharge while charging (Note: Output voltage >4.7/<5V at this time)

Parameter:

Charging voltage: DC 4.5V-5.5V (DC 5V recommended)

Charging current : 0-2.1A

Charging quiescent current : 100uA

Full voltage: 4.2V+-1%.

Discharge current: 0-2.4A;

Discharge quiescent current : 50uA

Discharge efficiency: up to 96%

Output voltage: 5V

Output current: 0-2.4A;

Ambient temperature: -20° to +85°

Size : 25 x 16 x 4mm

Weight : 2.3g

The module comes with a lithium battery protection function (the lithium battery does not need to have a protection board, it does not matter if it has a protection board)

Over-current protection (OCP)

Overvoltage protection (OVP)

Short Circuit Protection (SCP)

Over-temperature protection (OTP)

 Pin description:

1 VIN : Charge port positive input +

2 GND : Charger Negative Input -

3 BAT : Lithium Battery +

4 GND : Lithium Battery -

5 GND : Output negative output -

6 VOUT: Output Positive Output +

7 KEY : Output Enable Trigger Port (Low Pulse Trigger)

 1 In the discharging mode (the charging mode KEY function is invalid), the KEY port is triggered once and the output is turned on; the KEY port is triggered twice in succession and the output is turned off.

 2 The first time you access the load, the output is automatically turned on. If the load is less than 50MA, the output will be turned off after 30 seconds; if the load is greater than 50MA, the output will be continuously turned on.

 3 Allow discharge while charging (Note: Output voltage >4.7/<5V at this time)

Applications:

Car charging retrofit

Driving recorder power supply

Mobile power

Portable devices such as mobile phones and tablets

Package:

6 * 2A 5V Lithium battery charging protection module