I was at a yard sale today and picked up the above mentioned charge unit. I think it was originally used to maintain a battery on a larger generator. I have been looking into doing some sort of battery backup for critical circuits (heater, water pump, refrigerator and freezer). My question is will this unit work to keep a bank of 4, 6 volt battery's (24) maintained until i need them. I plan to put some solar panels up in down the road but until then this would be my temp backup. My second question is setting up a second Critical circuits curcit breaker box. Can someone lead me to a site that explains what i need to do for this, and a suggestion to a good converter to convert from 24 volt back to 110. OBTW i picked up the charger for $30.