Fried BMS - Left the connector connected to the BMS while building

ESK8 Electronics
1

Was building my battery back over a couple days and recently noticed my bms fried itself. I’ve included one picture of the fried bms and a pic of the non-fried one.

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I’m assuming something got shorted via balance leads since I left them connected to the bms while I was working on it. As a result one of my parallel groups got discharged to 3.0v and another to 3.4v. The rest of the parallel groups hover around 3.6.

The reason for my post is to ask how this might have affected my cells and whether it is safe to continue to use them or not.

This is my first post on here so I’m not sure if this is the right place to post.

Thanks in advance!

2

It’s hard to tell what happened just by looking at that photo. The other side is where the frying would have happened.

Your cells are most likely okay since they are all still within safe range for Liion cells. I’m assuming they are liion anyway. Make sure to charge up the low ones back to 3.6v before trying to plug into a different BMS.

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Cool thanks!

Just wanted to check for some peace of mind, before preceding.

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