Had a bad cell in my 10kWh rack battery and manufacturer sent replacement cells to fix it. Was a bit worried as I have been reading here how hard these pre-assembled batteries are to work with if anything goes wrong. At least this one was super easy to do.
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Opened the lid.
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BMS
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Changed defective cells.
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Installed Neey 4A smart balancer
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Need to put it in one piece again. Don't know when I have time to do that and can't be sure if I even remember how to anymore. Plan is to drill a hole for Neey cables in the casing so I can connect/disconnect balancer box when ever I want. This way I need only one balancer, but I can use it with many batts when I just install wirings to them.