[JFP in PA]

Originally Posted by blue2000s

My battery tender gets hot enough to melt the plastic casing if I leave the battery connected. Current draw can be too high for some maintainers. If you can figure out how to reset the clock, there's no benefit to leaving the battery connected unless you use the cigarette lighter maintainer, which then you have to stay connected of course.

It's actually safest to completely remove the battery from the car in case the maintainer or battery have problems while charging.

If that is the case, something is definitely wrong with the car or the maintainer. I have been storing Porsches for more than 30 years, both for myself and customers; none of the maintainers (OEM, CTEK, Deltran, etc.) ever gets more than very slightly warm to the touch when first connected, after which they are nearly room temperature. Sounds like you have an excessive current draw problem…………….