I am going to reconfigure some 10s batteries to 13s.Can I basically cut& paste? Does the nickel strip have to be completely removed?

[James340]

It seems like can cut the nickel strip.Then splice the series and parallel to make a 13s3p out of the 10s4p.

 

[Chalo]

The main thing is to swap the BMS or balancer for one that can do 13S.

How you choose to deal with the nickel strips is your call. It is plausible and even advisable to cut the existing strips as necessary and use them as cell tabs, rather than removing them and welding on new ones.

Soldering wires or copper braid to nickel tabs is pretty easy and much less harmful to cells than soldering directly to the ends. If you use a cell welder, you may need to weld directly over the cell ends just to prevent blowing holes in the strip.

 

[James340]

The main thing is to swap the BMS or balancer for one that can do 13S.

How you choose to deal with the nickel strips is your call. It is plausible and even advisable to cut the existing strips as necessary and use them as cell tabs, rather than removing them and welding on new ones.

Soldering wires or copper braid to nickel tabs is pretty easy and much less harmful to cells than soldering directly to the ends. If you use a cell welder, you may need to weld directly over the cell ends just to prevent blowing holes in the strip.

That's what I thought.I read many who reclaim cells removed all the material from the cells but that didn't make sense to me.

 

[docw009]

Obviously, the layout determines what you can do with simple cutting and some solder. A typical 36V in a 4x10 brick would have to be taken apart to reposition the ten cells you removed into three contiguous p-groups. In fact, I cannot think of any 10S-4P's I owned that are readily reconfigurable, Seems like a whole row of 10 cells have to be popped out and positioned anew.

Curious to see what your current battery layout looks like,
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I wouldn't bother if the cells are glued together, You can't get them apart without tearing the PVC wraps on the cells, which has to be replaced, Glued cell packs can come loose and short circuit between cells, Cells in a plastic form would be feasible though.

Do leave the nickel on the cells. Copper braid solders well to it,



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[James340]

Obviously, the layout determines what you can do with simple cutting and some solder. A typical 36V in a 4x10 brick would have to be taken apart to reposition the ten cells you removed into three contiguous p-groups. In fact, I cannot think of any 10S-4P's I owned that are readily reconfigurable, Seems like a whole row of 10 cells have to be popped out and positioned anew.

Curious to see what your current battery layout looks like,
.
I wouldn't bother if the cells are glued together, You can't get them apart without tearing the PVC wraps on the cells, which has to be replaced, Glued cell packs can come loose and short circuit between cells, Cells in a plastic form would be feasible though.

Do leave the nickel on the cells. Copper braid solders well to it,



,

,

One battery is in a Hailong case.I will use a 13s3p I have as a template.The other is a PVC 10s5p so am removing 11 cells But I can use the removed cells to make a 3s4p to power the Welder.

 

[docw009]

I don't think you will have enough current to power a welder with 3S-4P 18650.

 

[James340]

I don't think you will have enough current to power a welder with 3S-4P 18650.

The little spot welder for building batteries.They are 21700 "4800"max"