EV6 HV Battery Drain
Just wanted to get people’s thoughts on if they deem this to be normal behaviour, if they have the same issue on their EV6 or if they think this needs to be looked into further.
For content, I’ve owned my 2023 EV6 since February and has done 15k miles total, at times when it is left parking either overnight or for an extended period (6 hours or more), I’ve noticed the HV battery losing charge.
My local Kia dealer has had the car in 5-6 times to look at this and the below has been done by them or I’ve tried:
Infotainment system reset, no APIs connected
Kia Connect disabled and all app disassociated
Tested different drive modes
Nothing left plugged into the car when left
Kia replaced 12v battery under warranty
Kia recalibrated HV battery when charged to 100%
It’s now been a month since the HV battery was recalibrated at Kia and below are examples of battery drain:
23-24.07 - Lost 2% from 85-83% overnight
27.07 - Lost 3% from 53-50% in the afternoon
27-28.07 - Lost 1% from 48-47% overnight
03.08 - Lost 1% from 55-54% between 8:15-2:15
03-04.08 - Lost 1% from 51-50% overnight
04-05.08 - Lost 1% from 46-45% overnight
06.08 - Lost 1% from 43-42% between 8:30-3:30
17-18.08 - Lost 1% from 67-66% overnight
18-19.08 - Lost 2% from 41-39% overnight
The 1% drops I could understand but the 2-3% drops are more of a concern and lead me to think there is another form of phantom drain. My local Kia dealer at this point has been liaising with Kias technical support directly prior to my last visit to try and sort this.
Just wondered if anyone else had experienced similar issues with their EV6 or if they would class these battery drops as normal behaviour?