The "live" test voltreg describes above is likely an accurate method to determine battery health. An alternative is to test pack voltage variance when depleted and let sit overnight. A weak cell will likely drop much more than others over time. If you measure delta under different conditions then compare results, you may get a better indication of overall pack health. A delta that remains consistently in the .02v range would be optimal, <.05 is good, >.10 poor. IIRC, a propulsion reduced error occurs at the .25v range. The danger is a weak cell can overheat when charging and GM engineers erred on the safe side to prevent problems. For older packs, some are using Mountain mode all the time to raise the minimum voltage before ICE ignition and preventing any week cell from ever dropping out. Your pack is happiest when plugged in.
Battery health 2014 Volt
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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![Product Font Material property Screenshot Parallel]()
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?
