bgarr33434 wrote:So, using the EVExtend, or one of the alternatives to hook up the 12V battery to the engine system battery, how many miles should I expect to get, assuming I have already totally exhausted the engine battery. BTW, how big is the system battery?
Your question makes no sense.
There is no engine.
There is a traction motor pack.
24 kWh but only ~21.5 kWh available when new.
The topic is about using that battery for other uses when electric power is out.
If the traction pack battery is fully empty, the LEAF will not move at all until you charge it back to above 7%.
And as I learned the other day the LEAF will likely deplete the 12V battery after the traction motor pack is empty.
My 12V was down around 7V and had to use jumper cables from ICE to even be able to charge the traction pack.