Slight Battery Drain

[Stephen Graff]

I have a 2021 mini cooper se. I left it parked in front of my house for 3 days and drove our other car. When we returned from vacation, the SE battery had lost 1% of its charge. It had been raining pretty heavily. Not sure if unlocking and starting car could have drawn slightly from battery. Is this something of concern?

 

[Puppethead]

I've left my SE parked for over a week (in a garage) with no battery drain. If it was cold/hot enough perhaps your 1% was used for battery conditioning, or perhaps you have an automatic climatization departure time enabled?

 

[Stephen Graff]

Thanks for responding. Temps here are in upper 40s. I don't use any of the scheduling options, so I don't think it could be that.

 

[insightman]

I have a 2021 mini cooper se. I left it parked in front of my house for 3 days and drove our other car. When we returned from vacation, the SE battery had lost 1% of its charge. It had been raining pretty heavily. Not sure if unlocking and starting car could have drawn slightly from battery. Is this something of concern?

A 1% loss shouldn't be of any concern. It is possible that your battery was sitting just above the 1% boundary when you parked. Measuring the state-of-charge in a battery is more complicated than determining the amount of gas in a tank. Some on this forum have reported occassionally seeing 99% after charging is halted.

Perhaps if you had parked 25 yards further down the street, the state-of-charge would have been 1% lower when you got out of your MINI and remained at that level until you returned from vacation.

 

[MrSnrub]

Zero concern. Ive left my car for 13 days once and lost 2% according to the SOC. All EVs have some drain sitting there.

 

[teslarati97]

Most of the vampire drain from EVs are from the 24/7 security cameras, proximity sensors, and telematic services. Overall I'd rate the SE high voltage battery drain as no concern.

I haven't played around with the hidden service menu (hold trip reset for 10 seconds), but I think you can see the state of battery health just like the i3 does.

 

[CuriousGeorge]

Zero concern. Ive left my car for 13 days once and lost 2% according to the SOC. All EVs have some drain sitting there.

I have gone 6 wk w/ absolutely no change:

[URL="https://www.insideevsforum.com/comm...torage-and-12-volt-battery.13715/#post-208382]

OTOH, I have sometimes seen the overnight/between use 1% drop mentioned up thread. I have also interpreted that as XX.5% being read on the high side then the low on the two occasions.