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What is the maximum voltage that 3S BMS voltage can input?

I have connected the 3S BMS to a 12.3 V power supply unit that is simultaneously charging the battery and powering the connected router. However, the batteries do not charge quickly as the voltage supplied by the power unit is already being used by the router. I would like to know if it is possible to connect a 24 V power supply unit to the BMS, since the router supports a voltage range of 8 to 24 volts.

Battery Management System
October 10, 2023

The maximum voltage that the BMS can handle should be 12.6 volts.

I recommend that you do not connect a 24-volt power supply unit to the BMS as this will cause the power supply unit to overcharge and potentially explode. This is due to the fact that a power supply that exceeds the rated 3S BMS voltage and the battery pack can cause serious damage and safety risks to the batteries.
It is possible to continue to use the 12.3-volt power supply unit as there do not appear to be any problems with it so far. This is because the router will work fine with voltages ranging from 8 volts to 24 volts, but the 3S BMS will not. The battery management system should have a maximum voltage of 12.6 volts. This is the maximum voltage limit that the user should follow when using the power unit to ensure the safe operation of the battery and 3S BMS.

MORE: If the voltage limit of the charge controller is too high, will BMS limit the voltage of battery charging?

Jessica Liu

Jessica Liu is an engineer at MOKOEnergy with expertise in IoT devices, MCU, VCU, inverter, and BMS. She has a degree in automation, 6 years of work experience, and several certifications in project management.

Jessica Liu

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