2A 5V PCB Protection Board Li-ion Battery Charge Discharge Integrated


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4-in-1 Charging / Discharging / Lithium Battery Protection / Battery Level Indicator Module

When using lithium battery, its charge and discharge need a circuit protection to protect the lithium battery from being charged or damaged or to obtain safe power supply from the lithium battery.
The mobile power module is used as the charge and discharge protection for lithium battery.
Compared with the general lithium battery protection board, the module has four LED indicators to indicate the current power of the lithium battery.

Charging voltage: DC 4.5V-5.5V (recommended DC 5V)
Charging current : 0-2.1A
Charging quiescent current: 100uA
Full voltage: 4.2V+-1%.
Discharge current: 0-3.5A;
Discharge quiescent current: 50uA
Discharge efficiency: 96% maximum
Output voltage: 5V
Output current: 0-2.1A;
Ambient temperature: -20° to +85°
Module with lithium battery protection function (for lithium battery without
protection, with protection board)
Overcurrent protection (OCP)
Overvoltage protection (OVP)
Short circuit protection (SCP)
Over temperature protection (OTP)
Charge and discharge power level 4 interval indication

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)

1. Function features: key on / off; support charging and discharging at the same time; 4 LEDs, 4-level power indication; intelligent identification of load, automatic standby, standby current less than 100uA; Self-adaptive charging current regulation, self-adaptive adapter.
2. Key function: if the duration of the key is longer than 50ms but less than 2S, it is short press action. Short press will turn on the power indicator and boost output. The key action less than 50ms will not have any response. Press the key twice in a row within 1s, and the boost output, power display and lighting LED will be turned off.

Size: 25 x 16 x 4mm
Weight: 2.5g

The estimated delivery time:

  • Standard (Free for orders over 25£ or 1.90£ Service) – Estimated 1-2 working days
  • Tracked 24H – Estimated 1-2 working days with tracking
  • Next Day Special Guarantee- Next Working Day before 1 p.m. (if ordered before 3 p.m.)

Items are normally dispatched within 24 hours (the same day if ordered before 3 p.m., excluding weekends) in 99.9% of cases.

When you place an order, and it is successful, you will receive an email confirmation for the received order. When the order is dispatched, you will receive an email confirming that your order is complete. Please note that if the order is placed with the standard service, tracking will only show when a delivery attempt is made or when the order is delivered.