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Battery health 2014 Volt

1976 Views 13 Replies 8 Participants Last post by  hellsop
Hello, haven’t posted in years, as my Volt has been relatively trouble free over 70K miles. The Volt sat for almost two years of the COVID lockdown as I didn't need it for my commute. After we returned to work, my work location is a 2 mile drive. The battery never depletes.

From what I’m reading here it appears all Volt owners will face a day of mourning when the battery gets to EOL and battery replacements are either impractical or cost prohibitive.

My question to the group is that of all the Variables linked to battery health, has anyone uncovered a specific set of criteria other than cell voltage differences to indicate a battery entering its down hill slide? It would be great to know that sweet spot at which you should drive it to the dealer to trade. The retail values of these are still high.

I used my bidirectional scanner yesterday and this is the report. Perhaps I need to dig deeper to read the individual cells, but it appears that the software does it for you. Acceptable difference of .02V. Is there anything looking strange or do I have a very good condition battery for 9 years old?

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Does the battery need s e depletion cycles to increase capacity?
It does. After many cycles of charging without depletion, the battery will start getting pessimistic about its range estimations without actually diminishing its capacity. A couple of full depletions will set it right though, and it will start more accurately predicting how far it actually can go. (I've a suspicion that it doesn't well account for battery conditioning power and similar "startup costs" when it's looking at its historical consumption per mile calculations and projecting from those how far it might get on a discharge cycle.)
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