Originally Posted by
corrado33
I know you said that you are parking in the middle of a parking garage, but if the spot gets sun at all, you could think about a solar charger. ... Anyway, if the car does get sun make sure you use a sun shade. Also, if your tires get sun, make sure you cover them. UV damage is the largest cause for tire degradation on not-often-used cars/trailers. A piece of cardboard will work just fine.
Yes, I purposely park in the middle of the garage to avoid sun (except maybe a few oblique dawn/dusk rays). Thx for the electrical tips, that's good info for diagnosing battery issues.