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Old 10-19-2018, 09:22 PM   #8
17rsvert
 
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Drives: 2017 HBM 2LT RS Convertible V6 A8
Join Date: Jan 2018
Location: NJ
Posts: 654
Something seems off with the smart charging system. If I keep my voltmeter displayed on the dash, sometimes I can drive long distances (one day, over 3 hours) and the voltage never went above 12.2 V and stayed at 12.1 most of the ride. The next day I checked the rested battery and it was 11.9 volts and the next mornining it was dead below 6V. Charged it up and it's OK but still seems glitchy. Recently, half hour trips to work and back show 13.1 to 14.5 volts most of the time occasionally reading low 12s. This seems more normal so why isn't it like this all the time?
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