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Sudden unexplained drop in SOC?

1114 Views 7 Replies 4 Participants Last post by  Yinzer
I’ve owned my 2014 ED for just over a year now and there have been a handful of times when the state of charge drops 10-20% while the car is parked for a few hours. The first time it happened, I thought I was just imagining it. It happened again today and I’m positive it is real. It was at 40% SOC when I parked at work in the morning. When I got In to go home seven hours later, the SOC had dropped to 30%. Any thoughts on what would cause this to happen? I am still on the original 12V battery.
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I'd say if your 12v battery is the original, THEN GET IT OUT OF THERE NOW!!

2014 EV Coupe 21.500 miles
2014 EV Cabriolet 22,000 miles
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