On 1 Aug 2026 at 9:57, Darryl McMahon via EV wrote:

> It didn't occur to me to put one on the Leaf due to the big DC-DC 
> converter from the traction pack that should be maintaining the 12-volt 
> auxiliary.

That may not be the kind of maintenance you want.  

For several months I'd go out to the garage and sometimes, especially in the 
wee hours, find our Renault Zoe (your Leaf's cousin) humming faintly to 
itself, its instrument pod lit up.  If I opened and closed the driver's door, 
a minute or two later I'd hear the contactors open and the car would go back 
to sleep.

I finally thought to measure the open circuit voltage of the house battery. 

Ah.  

Changing the then-5-year-old SLI lead battery put paid to the car's insomnia.

It also stopped the concerning drain on the main battery, which in one case I 
saw lose ~2% of its charge over about a week without being driven.

David Roden, EVDL moderator & general lackey

To reach me, don't reply to this message; I won't get it.  Use my 
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