What is the best way to maintain my 48V (Tomberlin) cart batteries if we are gone for 8 weeks? The cart will be in the garage, and it does get very hot in there. Or would it be better to be under roof (under a big overhang for the grill) with a cover on the cart? Would we use a trickle charger? Disconnect the batteries? The batteries are new and I don't want to neglect their maintenance. Any ideas or suggestions? Please help me to be a responsible Tomberlin cart owner!!! Thanks ahead!