Imanone

Have 2022 GLE 450. Yesterday, happened to look at the engine info screen and saw battery at 14.9 while driving around locally. Today, while driving at highway speed of 65-75 for over and hour and a half, battery now show 12.8. The Mercedesme app shows fully charged. Can’t get through to dealer and reluctant to turn off car. Anyone have an informed opinion as I am some distance from home and want to beat the storm if I can

mikapen

Based on your report here, everything looks normal.
The resting voltage on the 12v battery is about 12.6v, and after starting, the car recharges the battery. As it does that, your charging voltage will read around 14.9 to 15.1.

The good news is that voltage has fallen the 12.8, meaning it is approaching full charge. If it stayed at 14.9, it would indicate that you needed to drive more to recharge fully, or that the battery isn't accepting a charge. Neither is the case, and 12.8 is a good thing.

Don't worry - shut off your car and relax. The next time you start, you'll see the same sequence.

Imanone

Was hoping you would see my post. You and Ron are my go-to guys! Thanks!

mikapen

Thanks. I've sure learned a lot on this forum, too.

schkar

Great info. Thanks for sharing