Battery test at dealer

[Uknown]

My dealer is fixing a sensor calibration issue, and since I noticed a 40-50 mile range decrease asked them to check the battery. They are which is great. It requires them to run the battery very low. Wondering if any of you know what test they are doing? I searched for TSBs but didn’t find much on the forum.

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[Tooney]

For details of Porsche "deep test" which is used for official determination of battery degradation, read posts by @Genau in this earlier thread.
Also this post: https://www.taycanforum.com/forum/t...ery-soh-performance.12815/page-36#post-280051

 

[Uknown]

It’s a long test for sure! They started it Wednesday first thing. Still no update.

I did notice the range at 100% idle guesstimate is back to 250, so guessing it is fine, and rebalancing helped some… it was like 220, and then would drop to 200 almost as soon as I started moving.

assuming it will come back clear with an update on Monday.

 

[Tooney]

After charging to 100%, the guess-o-meter range dropping quickly as soon as the car starts moving is not unusual, from what I have seen. That's why it's called guess-o-meter. I've seen the GOM range be unusually (and erroneously) high right after charging to 100%.

 

[Uknown]

Car comes back tomorrow with some paperwork, I will also attach obd connector to compare. Their measurement is 90% SOH.. not bad for 47k miles… planning to ride this one out to next gen, or swap it for a slighter newer J1 based on these prices lately

 

[violuma]

I can't tell where you are physically from your public profile, but in my limited experience, cabin climate control has a pretty significant impact on the range guessometer. I can make it jump up or down 20 miles just by turning the AC/heating on or off, and I'm in a pretty temperate climate.

 

[Uknown]

I can't tell where you are physically from your public profile, but in my limited experience, cabin climate control has a pretty significant impact on the range guessometer. I can make it jump up or down 20 miles just by turning the AC/heating on or off, and I'm in a pretty temperate climate.

That could be it. I will see what I get now that I have car back. I did notice the guess-o-meter at 100% at dealer showed 262
Miles… at home before they did their multi day test 100% was lower in 220ish range. So maybe cell rebalancing took place during test?


Either way will see what I get consumption wise over next few weeks.

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