The BMS is an integrated circuit board that protects rechargeable lithium batteries and is essential in all devices that use such batteries.

The BMS protects the battery from:

• overcharging
• over-discharged
• excessive voltage
• short circuit
• extremely high charging and discharging temperature

Wiring definition:

• B-: The battery’s overall negative pole (the negative pole of the first battery)
• B1: Positive pole of the first battery
• B2: Positive pole of the second battery
• B3: Positive pole of the third battery
• B4: Positive pole of the fourth battery

Specifications:

• Operating voltage: 12.6V
• Maximum output power / charging power: 25 W

Balancing instructions:

• When the balancing indicator light is on, the balancing work is activated.
• The balancing indicator light is off and the balancing circuit is in standby mode.
• The balancing indicator light is flashing, indicating that the string has fallen or the circuit is faulty.