radio across two batteries
It has been my experience that the draw from the radio is so small,unless you have a master blaster, you don't have to worry about shortening the life of the two batteries,if it does it is so small as not to be noticed. The batteries will all equalize with another overnight charge anyway. it is important to charge your batteries every time you use the golf cart more than twenty min. of travel time. I worked as an Electrical Troubleshooter in a large GM Truck plant in Ft.Wayne IND. and we charged our carts (with on board chargers) every time we were near an outlet an not using the cart. Since the Electrolyte rises during the charge cycle only water the batteries after charging unless the plates are showing then put in just enough distilled water to cover the plates and then fill the batteries after charging. Do not fill them up into the fill well,but leave about one eighth of an inch below the fill well and not up into the slot or the water will bubble out onto your garage floor. Keep the battery tops clean and spray the posts with a terminal protectant or smear grease on them, I hope this helps people.