hello friends,
I'm planning to make a 4S1P battery pack. I'm using a BMS with balance charge function. But I'm so confused with the 5 balance wires that could be connected to the connector on the board. I have attached a pic of the BMS board that I'm using in my project. My question is , apart from the balance wires there are 7 silver pads i.e P+, P-, B+, B-, B1, B2, B3 on the board. I have already attached wires from these silver pads to the respective terminals as shown in the second pic. But what should I do with the balancing wires?? these are also named to connect in the same terminals as of the silver pads so what should I do ?? Should I short these balance wires to the silver pads for the balancing to work or I just don't connect it assuming that its an additional setup for those who don't wishes to solder to the 5 terminals(B+, B-, B1, B2, B3) on silver pads.

 

Data sheet for the board?

 

Your wiring is Correct, just supply the board with the correct voltage P+/-,, and the pcb takes over, charging and balancing automatically .

 

Agree. Does your BMS have a readout so you can monitor the voltage? Mine do, and I consider it an essential safety feature.

 

Data sheet for the board?

Thank you Sensacell for your attention. I brought this module from a Chinese website and unfortunately they haven't provided any datasheet for the board. Instead they just provided with some basic specifications like maximum current, voltage input and output etc.

 

Your wiring is Correct, just supply the board with the correct voltage P+/-,, and the pcb takes over, charging and balancing automatically .

Thank you very much for your reply. So the balancing wires and the connection plug are an optional thing ??

 

Agree. Does your BMS have a readout so you can monitor the voltage? Mine do, and I consider it an essential safety feature.

Thank you very much for your reply. By readout you mean a voltmeter display?? I'm connecting my project to a small voltmeter display externally to monitor the battery voltage.

 

Yes, I meant a voltmeter-like display. The BMS I use for lipo's shows the current voltage and charge rate for each cell.

 

Thank you very much for your reply. So the balancing wires and the connection plug are an optional thing ??

No, they are not optional. They are used to ensure that all 4 cells are charged to the same level and you don't have some overcharged and others undercharged.

Bob

 

No, they are not optional. They are used to ensure that all 4 cells are charged to the same level and you don't have some overcharged and others undercharged.

Bob

Thank you very much for the reply. So along with the conections from the silver pads should i also connect the 5 balance wires from the white connector on the board to the silver pad again for the board to work properly

 

Yes, I meant a voltmeter-like display. The BMS I use for lipo's shows the current voltage and charge rate for each cell.

Ok now I understood. Mine doesnt come with one. But the bms is driven with a cc/cv buck converter for a proper battery cycle charging. Its enough for a safe charging right??