Long term storing EQS
#26
FYI: If you have the EQS parked for a long time, then it will automatically recharge the 12V battery from the high-voltage battery, whenever the 12V battery's charge drops. (I have done this several times now in the 1.5 years that I've had my 2023 EQS SUV.) There should be no need to hook up the 12V battery to a charger.
#27
Limitation of this approach
FYI: If you have the EQS parked for a long time, then it will automatically recharge the 12V battery from the high-voltage battery, whenever the 12V battery's charge drops. (I have done this several times now in the 1.5 years that I've had my 2023 EQS SUV.) There should be no need to hook up the 12V battery to a charger.
No automated 12V charging did happen. May be they improved the SW for 23, mine is 22?
#28
However, a few other people have reported not seeing their 12V battery getting recharged automatically from the high-voltage battery, so YMMV...
#29
Member
FYI: If you have the EQS parked for a long time, then it will automatically recharge the 12V battery from the high-voltage battery, whenever the 12V battery's charge drops. (I have done this several times now in the 1.5 years that I've had my 2023 EQS SUV.) There should be no need to hook up the 12V battery to a charger.
My brother went out of the country the same time with us, he left his brand new MDX sat for 2 months, battery was dead when he got back, he checks the voltage and it is showing 2.7V, Dealership replaced the battery under warranty.
There also a worry in the back of my mind that leaving the L1/L2 plugged in will caused something to happen like a fire. I even though about parking the EV outside. Better be safe than sorry, i guess. LOL
#31
No, that is not true - at least for the 2023 EQS 580 SUV. See my experience, reported here: https://mbworld.org/forums/eqs/86796...ml#post8796134
However, a few other people have reported not seeing their 12V battery getting recharged automatically from the high-voltage battery, so YMMV...
However, a few other people have reported not seeing their 12V battery getting recharged automatically from the high-voltage battery, so YMMV...
So for a model that function the way mine operate my recommendation are still valid.
#32
Super Member
I just got back after three months leaving the car unplugged at 45% charge and it started up as normal.
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#34
Super Member
44%, down 1%. I was impressed, the last time I did that with the e-tron the 12v battery was dead and had to be replaced under warranty.
#35
Fantastic. This is significant news confirmation for all EQ owners who store their cars for long period of time. The same experience may not be true for other EV brands.
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