- First Name
- May 11, 2020
- Reaction score
- santa fe,nm
- MME (delivered 2/26/21), DIY eMiata conversion
- Solar Sales/install
I don't KNOW that the MME checks 12v when 'off' since it apparently shuts down all the parasitic 12v loads it can once the car is turned 'off'. I am only guessing that it checks once in a while to take care of the LV battery when MME is parked for 'long periods'.You've contradicted yourself here. I think the latter is correct and you will not need to have the Mach E on to keep running 12v power off the battery access jump points and the dc-dc system should keep it topped up. There's only one way to find out for sure.
This would be different that doing this same operation on my Leaf. The Leaf definitely has to be turned on to keep the 12v battery topped up.
For my purposes, knowing that I want to run significant 12v loads while parked, I am GUESSING I'll have to leave MME turned on so that main contactors stay closed, dc-dc is powered up, etc.