2012 Honda Odyssey complaint car battery will discharges sitting overnight. The 3 1/2 yr old 75 mo battery was charged up on a battery maintainer for several hours and tested ok at 12.9V with my HF Earl Chive $39.99 battery tester. AC clutch Relay didn't test as shorted , but still removed the AC clutch relay per a TSB on the issue. Took my $4.99 HF Earl Chive test light and waited awhile after all the interior lights went off and didn't see there was enough draw when separating the cable clamp from the post to cause the testlight bulb to begin to illuminate, however in the morning the following day the battery was at 10.6 v and tested NG. Tested again with test light and again no draw enough to illuminate the d@mn test light bulb Cant seem to pry the top on this Napa Legend battery to check specific gravity of the electrolyte of each cell. Guess I'll have to just charge up battery and leave it disconnected overnight to see if the battery discharges by itself overnight internally somehow.
Not sure if something awakens later and something funky turns on like some Chinese junk leak detection pump kicks on in the middle of the night and sticks on for a long time that I don't know about.
Not sure if something awakens later and something funky turns on like some Chinese junk leak detection pump kicks on in the middle of the night and sticks on for a long time that I don't know about.
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