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Discussion Starter · #1 · (Edited)
After complaining about the battery a second time to a different dealer. And finally getting a replacement. I've been watching my volt gauge.

The car starts with 12.2 volts regardless with headlights on or off. Start car up it drops to 12.0 volts. For a couple of seconds. Then jumps back to 12.2 for a couple of seconds then slowwwwly starts to work it's way up. It takes about 3 minutes to reach 14.6 volts. I don't know what it was doing before the battery replacement other then it would usually hit 15.4 volts. Frying the battery.

Normally that's a sign of alternator starting to go. But with today's electronics.

It also doesn't do that fuel savings thing anymore. Hasn't done that for about a month. It's always constant.

How does YOUR alternator react???? I"m wondering if i'm still having charging issues. I know my heat still isn't quite as good as it used to be When i first got the car. But better then what it has been lately. I'll probably have to live with what it does. It might have been the result of having 15.4 volts.

17 cruze gas 2600 miles.
 

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Discussion Starter · #4 ·
Will post in the morning. Car just got parked for the night.

I've been holding the button down to activate service mode. The old battery was 11.9 to 12.0. The new battery seems steady at 12.2 with or without the lights.

On my next day off. I'll climb in the trunk and use an actual volt meter with the car off. I've ordered a new volt meter that does amps also so i can see what the draw is while the car is off. It has a clamp that goes around the cable instead of tieing volt meter in to the connection. ( stud to cable )
 

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Discussion Starter · #6 · (Edited)
What's the voltage of the new battery w/ car off? If you have push button start, hold the button with foot off the brake pedal til it turns green.

And yep, mine slowly builds up to 14-15 if needed.
The problem is the DIC. It's not LIVE information. It's delayed.

Connected a handheld voltmeter to battery AND ran obd2 alongside. They're more accurate and live. Both showed alternator functioning as it should. Battery however. Showed 12.4 after sitting all night.

Starting to think these glass batteries SUCK.
 
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