I used the Chargery BM. Just the monitor. They aren't terribly accurate. I measure with a voltmeter when I want an accurate measurement. And then recorded the difference from the BM to the voltmeter. So far the error seems stable. Painful workaround but...
You may have seen this fellow on endless-sphere. He's making the Chargery BMS look pretty good. Especially as the new version comes with some nice add ons. Bluetooth et al.
TYVA BMS seems similar.
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Current projects
Chevy Volt battery pack conversion
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Blog that is down right now but will return
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Business where I sell solar stuff
[url]https://www.bobolinksolar.com
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