Everything posted by Matt de Haast
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DIYish battery and Arduino tools
What setting are you using for bulk and absorpation voltages for the 12v pack? Seems you are only at ~14.1V.
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DIYish battery and Arduino tools
Are there any repercussions to it? Or stuff that will manifest a year or two down the line. For my use case I'm not really discharging the pack below 50% ever as I overspec'ed it quite a bit. Do you have some discharge chart as well? My cells drop quite a bit of voltage when I apply a load. So at the moment I float at 13.8V with the pack showing 14v and as soon as I apply a small load of 6A. I am down to 13.2V within a few mins. Trying to work out if it is just worth asking for a refund and getting a different battery.
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DIYish battery and Arduino tools
Ok cool will try that. Why do they drift so much though after they have been balanced. That is weird. You'd expect them to stay pretty close to spot on under normal load once balanced.
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DIYish battery and Arduino tools
So I have have a single battery with the actual cells inside unbalanced. Not sure how I would actively manage a single battery to balance them? Vestwoods rep hasn't been great to get resolved. My mate has suggested taking it apart and balancing the cells properly myself.
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DIYish battery and Arduino tools
Hey @JustinSchoeman I also bought the 200AH champ, but I am running just a single one of them in 12v with a victron inverter. I see you noted they were out of balance, something I've been dealing with badly now since I got mine months ago. They still are quite different and I have had to set my actual bulk voltage for charging to 14v because it would hit the over alarm on one of them if I didn't Are you seeing the same? Do you have any recommendations? Also thanks for the BLE stuff. Going to set that up and hookup to my home assistant. Matt