Battery Drain Overnight?

[chrisk]

I don't think what you experience is "drain" i.e. energy spent. I believe it is the car recalculateing SoC and sometimes it results in a big drop due to temperature change or cell rebalancing. I have also seen the opposite e.g. last week I left my car at 80% and next morning it was 83% without being plugged to a charger.

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[ChrisFromUK]

You might be partially right and I've seen the SoC increase from 59% to 63% over 3 or 4 days.

But almost always the changes are downwards and by about 1% a day or a little less. A recent 14 day holiday had the SoC drop from 68 to 53%.

I find it hard to believe rebalancing has anything but a small contribution to this.

What to do about it though - dealers don't seem interested?

 

[Paris92]

It went down another 1% last night. Very odd.

 

[Postesla]

Yesterday the My Porsche app indicated my battery level was at 81%; as it has been for the last two weeks of non-use. Today the app indicates 68%. I am not at home so unable to check myself. Any ideas what would drain the battery that quickly in less than a day sitting idle?

 

[Postesla]

Yesterday the My Porsche app indicated my battery level was at 81%; as it has been for the last two weeks of non-use. Today the app indicates 68%. I am not at home so unable to check myself. Any ideas what would drain the battery that quickly in less than a day sitting idle?

I've left my vehicle for several 1 to 1.5 week trips over past 3 months----each time, zero to negligible phantom drain. usually leave it at 80%. always in my garage, unplugged.

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