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Old 09-24-2022, 08:27 AM   #11
DaveTM
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Default Re: HV Relay trip

I have my upper cell HV relay set to trip (and stop charging) should any given cell reach 4.1V.

I charged it a few days ago but I still got the one cell.....Cell #1....to"trip" the HV relay....thus not giving me my "wanted" full 57V pack charge.

So, I'm going to set the upper cell limit to 4.15 and see if I can bump the total pack charge to 57V without that one cell causing the HV relay trip. I'm still going to leave the balancing at the "Dynamic" setting so it brings that #1 cell in balance with the others.

I don't see any harm in this as I'm still below the upper 4.2VPC limit.
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Old 09-25-2022, 03:29 PM   #12
DaveTM
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Default Re: HV Relay trip

So, after bumping up the HV setting to 4.15 and doing another charging cycle, the HV relay did NOT kick off prior to the pack reaching the target voltage.

However, that cell #1 is still above the rest. After charging the Delta of cell #1 was .028. Previously, when the HV relay kicked on and the max pac charge was 56.8, cell #1 had its Delta at .009.

So, cell #1's Delta went from .009 to .028. In fairness though, I measured the Delta of .028 immediately after charging, where the .009 was a good 6 hours later.

I'm not getting all worked up and jumping out of the cellar window.....but thought I'd update the thread.
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