wolf alchemy
Proven Member
- 724
- 14
- Mar 4, 2014
-
kouts,
Indiana
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12.1 does not look like it's charging, if it were charging it would be sitting at 13.6-14.1. All that picture shows is you have been using the battery and it dropped from 12.6 (normal b+ while car is off) and are draining the battery.
... some things to post.
Lead Acid Batteries can do what they want to and they will gain voltage on themselves due to the sulfuric acid. Even Alkaline batteries will gain a slight gain in voltage when resting . And to see less than a half volt difference in ACC isn't anything to worry about.
True, check with A VOM (or DMM as they are now called), but still nothing to fret over.