Battery recommendations for 1500W inverter

Hmm... Thought I just did that. No matter. 6ea. 6cvolt Lifeline batts that will take as much charge as you can give them. My charger is older and only has 3 stages. When charging from shore power the "bulk" stage runs at 200 amps when the batts are low and not temp limited. Tapers off on absorbtion. Truck diesel has twin alts and can put over 175 amps depending on depetion and temps. Runs the AC for about 55 mins or so or the MW for any cooking the two of us want. Trying to do both is what blew fuses.