At my one year service/battery check, it was noted on the Leaf multi-check form that the 12 volt battery needs a recharge.
The service advisor made no mention of it when I picked up the car and I didn't see this "issue" until I got home.
Why would the 12 volt battery need a recharge if the car is driven "normally"?
Surely, leaving my iPod connected to the USB port all the time can't be draining the 12 volt battery THAT much, can it?
I don't have any other aftermarket accessories connected.
I do have very low mileage (4600 in one year) and I understand the 12 volt battery charges ONLY when the car is being driven.
It's also parked in a garage so the solar panel is not likely to add much charge to the battery.
Statistics from the Nissan 12v battery test printout;
MEASURED 409 CCA
STATE OF HEALTH
(Graph shows midpoint between bad and good)
BAT 53C DFQ HXM 3J2