HV Battery Health & RangeDiscussionCommunity Starter

2025 Porsche Macan — how are owners measuring real battery degradation?

DieselScout442Community StarterJul 17, 20262025 Porsche Macan Electric 4SBoston

Displayed range moves too much with weather and recent driving to be a useful health metric by itself. What repeatable measurements do you trust for tracking battery degradation over time?

Related listings

2023 Porsche Macan

$799/mo

Brooklyn, NY

3 replies

ShiftMom825Community StarterCommunity StarterJul 17, 2026permalink

Charge curves lie if you don't match starting SOC and temp. Match starting SOC and battery temp if you're comparing 2025 Porsche Macan charge sessions. Then you'll know the next fork. Post the numbers (or the code) and people can get more specific. Make the next action something you can finish this week. I refuse to clear codes until someone else sees them.

CamberSeller267Community StarterCommunity StarterJul 18, 2026permalink

Quick add on that: On the 2025 Porsche Macan, I'd get the 12V/DC-DC side checked even if the traction pack looks fine. That's where I'd start. On “how are owners measuring real battery degradation,” that was the fork that mattered for me. This is from a 2025 Porsche Macan in Boston. I'd want that in writing, not as a promise. That's my plan before I call anyone.

DieselScout442Community StarterCommunity StarterJul 18, 2026permalink

Tried a second charger / second scan and the story on the 2025 Porsche Macan didn't change. I refuse to clear codes until someone else sees them.

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