I think I understand this. However I have 12 cables supposed to merge into 10. I understand the ones in the middle should merge into one cable leaving me with 11 cables, not 10. Can someone bring some sense into this?Ianhill wrote:No it is nit as above that wrong, start at the negative end off the pack with the 5s balance lead and place the negative of blance plug with the first cell negative then so on to the 5th cell that is the end for one balance lead and the start for the other so cell 5 + is the end of one balance cable and the - of the next 5s balance lead start at the same spot so the potential difference across the leads is always the voltage of one cell. Iam poor at explaining sorry
My 10s BMS has only 10 pins which is what confuses me to the point where I'm close to becoming crazy.. If that wasn't the case I would probably have it all wired up by now...WeeChumlee wrote:Just to correct your drawing to reduce confusion.
The 10S balance plug will have 11 leads, just as the 5S plug has 6 leads.
Then do as Ian said.
Haha, ooops I have updated the picture to be smaller, the image is not cropped but you might have a smaller screen than meIanhill wrote:I can not see what is going on with BMS pin 1 from that drawing its been cropped to much it looks to have 9 cells if u count them
Thank you! So just to double check, does this mean the black (negative) cable from the negative batteries balance lead is left disconnected (since this is connected via the P- anyway)? This would mean that when I measure the voltage from pin 1-10 I'd get only 34 instead of 38 volts, correct?WeeChumlee wrote:In this case the 'missing' 11th pin is just the minus connection.
That diagram pretty much says it all, can't really improve on that.
Google 3S to 6S balance leads as they are common. 5S is obviously the same.
Thank you so much, will do the last soldering to the BMS tomorrow and hopefully all will be well!WeeChumlee wrote:Indeed, per the drawing above measuring between terminals 1 and 10 would measure 9 cells.
Sure you can measure between B- and terminal 10 - this would give you full battery voltage.
Sure will, might have a video coming too Although I might put it together with duct tape initially until I have time to make it look goodWeeChumlee wrote:Good luck dude. Post a few picks of your boards when done.