forestrider wrote:... I would expect a DC-DC converter with charging logic.
Can you please clarify, I'm still trying to sort out the charging system on my vehicle.
Yes, it has a very strong DC to DC power supply that takes high voltage pack power and produces power to charge the 12V battery. Capable of around 100 amps at 14.4V.
But its charging logic appears to mainly be based on current flow that has been measured by the current monitor in the 12V negative cable, although there are some adjustments based on temperature.
But the current sensor does not see the current drain when the LEAF is Off.
Like the high drain from an OBDII adapter.
And it does not appear to do an adjustment based on voltage like a battery maintainer charging logic.
So depending on use and loads while Off, the LEAF can leave the 12V poorly charged.
Unfortunate it does this.
But for many people using a battery maintainer while the LEAF is Off every week or two is a good practice.