Unbalanced cells (1 group of cells at 1v)

ESK8 Electronics
1

Hi guys, I have just come back after being away from my board for about 6 weeks. However when plugging it all back in the xt60 connector starts to burn and turn red. When I check my cells one parallel group of cells in my 10s3p pack is at 1V.

I have previously had to replace a group of cells in my pack due to them discharging more than others and causing the BMS to cut out while riding.

Any solutions would be much appreciated.

Thanks

2

You’ll have to add lots of photos and descriptions to get help.

3

Screenshot_20190830-153919 Screenshot_20190830-153929

4

Are those nickel strips even welded to the cell?

Some connection probably broke and allowed your cells to drop. You should just replace the p pack and keep riding

5

Ok, thanks for the help. I’m gonna have a proper look at the pack. And remove those bad cells. I wanted to spot weld the cells but I was on a tight budget. Cheers

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6

I can’t reccomend welding your cells enough. I understand about keeping costs down, but when your pack shorts and you have to buy a whole new board… It doesn’t end up being cost effective :frowning:

7

I totally understand, all a bit of a rush as well doing my GCSE. Will definitely change it when I build another board in the future.

1 Like