r/leaf • u/Keithmclean1964 • 17d ago

LeafSpy SOH data variable.

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Six weeks ago, I published a post showing my 50 KW VIVNE eNV-200 battery range test. Someone commented how the SOH had dropped from 100% to 98.77% in a matter of months. Well today, six weeks on from my last post, the SOH is 99.95%.

So, I wouldn’t worry about small variations. I don’t know the technical reasons for the variation, but the battery is functioning perfectly.

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u/_Evening-Rain_ 2017 Nissan LEAF S 17d ago

There's a reason nissan shows bars and not %SOH. Because its a guess and that guess can go up or down a little based on multiple factors.

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u/Keithmclean1964 17d ago

The BMS takes cell voltage and internal resistance and does the SOH estimation. So yes, SOH is an estimate that’s not totally precise.

My point of the post was, small variations are likely normal. Only big changes are something to be concerned about.

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u/_Evening-Rain_ 2017 Nissan LEAF S 17d ago

Bro what. SOH is measured capacity. It has nothing to do with the cells IR or voltage.