I don't think that's a good idea...at least from what I've read.
Agreed. The whole purpose of my preparations before I left, wash/wax, Sta-Bil,
Oil Change, Fill the Gas Tank, Car Cover, Overpressurize Tires, Solar Battery Charger was when I returned 5 months later; my Car would be in good condition and start.
I have been reading horror stories on the Forum about when the Battery dies how it started a cascade of problems.
No doubt MB's are "energy hogs".
Everything worked out smoothly.
Of course this can work for your Motorcycle, RV, Boat, Aeroplane etc.
Not just the Charger Unit but also the preparation beforehand.