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Replacing All Battery Cells - Gotway 84V


Chaz Witt

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My battery packs are shot and instead of forking over $1000 for new battery packs, I wanted to solder an entire new set of Panasonic 18650's.

Is this feasible, or would I be better off buying entirely new packs? I found a 100 lot of Panasonic 18650's for $450.

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10 hours ago, Chaz Witt said:

My battery packs are shot and instead of forking over $1000 for new battery packs, I wanted to solder an entire new set of Panasonic 18650's.

Is this feasible, or would I be better off buying entirely new packs? I found a 100 lot of Panasonic 18650's for $450.

It's feasable, but personally i would not recommend it. You'd need to make 100+ mechanicly and electricly reliable connections for ~ up to 10A continous and higher peak currents without damaging the cells thermicly.

Cell matching seems to be the primary influence for good performing and long living battery packs. The weakest cell is the one which determines your packs capablities, and it'll be the one taking the most stress and deterioate as first...

If you decide to build your own pack, this articel seems serious to begin with:

https://www.electricbike.com/introduction-battery-design-2/

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