Wireless battery charger

[toolmanmike]

Whatever works. I haven't had issues either way. Keep the top of the battery clean as well.

 

[OneWheelPeel]

I'll throw this out, and it's a fact.
When we're done racing the polara, it's parked outside in Oct. Used to disconnect it. It sits in - 40 for 7 months. ( well not that temp for the whole time..) then left it connected a couple years. No difference.
I'll go out and crank it in April, and it starts like the day we shut it down.
No drains , of course. It's hard for me to believe, but proof is in the pudding.

I have the same experience minus the cold temps with my 72 Ranchero. Old car that seems to have no draw when it’s off. My corvette was the same way until I added EFI.