I was CONSTANTLY being stranded in my conversions due to dead 12v.
Mostly, from dead DC-DCs. I had GaryK, against his advice, rig a jumper
from 4 LFP cells to the lead 12v. Dead 12v? Install the jumper and
drive home. Worry about the imbalance later. Once, when my DC-DC was
not working, I installed a pair of golf cart batteries in the passenger
foot well.
I've run the 12v down on my first imiev twice. Both from inadverntly
leaving the key on. For those not familiar with imievs, their idiotic
design forces one to twist the key against a spring to "crank the
engine". Having the key on runs accessories but not the DC-DC.
The Tesla has not stranded me with a dead 12v. It warns of impending
failure. I'm on my 3rd lead 12v in the Tesla. I have a lithium 12v
ready to go in for the 4th.
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