Quote:
Originally Posted by vstech
... 12.9! wow that's high. it should not be over 12.75... but when you turn on the key, the GP relay kicks on, dropping your voltage to around 10.6 then once you start the car, the relay should shut off, letting your alternator bring battery voltage back up. if the relay stays on, it'd take a big alternator to keep from discharging the battery.
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Actually I rounded that off... it was 12.92. It had been on the charger for a few hours earlier in the evening. However, the charger indicated it wasn't done when I turned it off, said the battery was only at 90 percent (and was still pumping in 2.4A on a 12A charge setting).
If I take that car to work tomorrow, I will wait and listen for the relay to click off before I fire it up.