14.8V lithium battery protection board

Charge/Discharge Protective module or BMS or Battery Management System modules are used to protect and control the charging and discharging of Lithium-Ion/Polymer batteries. These modules are usually categorized based on the current output and the number of battery cells they support. This module is a 4-cell lithium-ion and lithium-polymer battery charger with a maximum charging capacity of 20 amps. The charger features an Overcharge and Discharge protection circuit that prevents battery damage.
The circuit also has high-precision voltage detection and internal overcurrent detection. In addition, the MOS transistor can control the charging and discharging of the battery.

Note: This protection board cannot be used for lithium iron phosphate batteries, hand drill battery packs, electric car battery packs, electric bicycle batteries, stroller batteries, 775 (4a) or more motors, 1w fisheye led lamps.

BMS soldering instructions:
Battery connected B+ positive;
B1 Connect point between battery 1 and battery 2
B2 Connect point between battery 2 and battery 3
B3 Connect point between battery 3 and battery 4
B- Connect to the negative end of the battery
P- + Charge/Discharge positive connection.
P- Charge/Discharge negative connection

application lithium battery protection board:

1. Low power inverter
2. Massager battery pack
3. LED lamp backup power supply
4. Electronic products
5. Solar street light battery pack

specifications of the Battery protection board:

1. overcharge voltage: 4.25-4.35v±0.05v
2. over-discharge voltage: 2.3-3.0v±0.05v
3. charge voltage: 16.8 ~ 17 volts
4. maximum operating current: 10 amperes
5. maximum current: 20 amperes
6. operating temperature: -40 ~ 50
7. storage temperature: -40 ~ 80
8. small current: 6ua
9. effective life: 50000 hours
10. internal resistance: less than 100mq
11. short circuit protection: protectable, changeable for repair
12. size: 3.6x3.6 cm
13. weight: 5.2 g