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    Bad for BMS to [often] hit HVD and disconnect charger?

    A friend didn't top balance his cells. I would have lent him my benchtop power supply, but he didn't know I had one, and now too much hassle for him to disassemble pack (rather tight location and all that). He did connect them in parallel for two days (but reading in this forum, that didn't...
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    Different capacity packs in parallel, discharge ratios

    Please explain something to me: I have two packs in a battery bank. Pack A: 16S 105Ah, Pack B: 2P16S (280Ah cells) 560Ah. Each has their own Xiaoxiang BMS (aka Overkill). Both are connected to a busbar, to make the battery bank a nominal 665Ah bank. So, 105Ah and 560Ah packs - 16% and 84%...
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    Doubling bus bars when building battery packs

    Since the bus bar that normally comes with these Alibaba cells are lacking in impressiveness and thickness or width (hmmm... where did I hear that before? Oh, nevermind), most people ask for double bus bars from the sellers, or make their own from either copper pipe or whatever... Question...
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    Do you need to balance IF...

    For the record, I am top balancing my LiFePO4 cells (https://diysolarforum.com/threads/top-balancing-recommendations-fastest-or-best-practices.12179/) But, just hypothetically, and out of curiosity, do you need to top-balance if all these conditions are met/placed: (for 280Ah cells) 1. All...
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    Top balancing, recommendations (fastest or best practices)

    Ordered from Amy (Luyuan instead of Xuba) 32 280Ah cells. They're already in my country, so should be delivered to my home soon. Here's my plan: PLAN A: (all while slightly compressed using rigid plywood at the ends, and loooong hose clamps top, middle, and bottom part). 1. Parallel them and...
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    How do you balance different battery PACKS with each other?

    If I have a 16S 280Ah LiFePO4 pack where I have already top-balanced the cells, and it's now in use, then later on I want to add another 16S 280Ah pack (cells also top balanced), how do I make sure the two packs are balanced? It says that two of them in parallel will eventually balance, but I...
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