Yes we do draw heavily from our batteries and why we have so many for/in our RV's. Using the microwave, toaster, and other appliances and items for days at a time. Also the large screen various tv's as in the past before LED tv's they drew a lot more watts and on many hours at a time. We do stay quite often off grid (no hookups) in our 5th wheel and our Lance TC. We just prefer quiet and nature surroundings.
The 2 group 31 batteries in the truck's bed on the side ahead of the rear wheel well for when the Lance is on connect to the group 31 battery in our Lance which gives us 3 batteries to power our 1500 watt inverter in the TC. Has 330 amps available but we very seldom ever draw the batteries below 50% before recharging them. The diesel truck was ordered with dual large alternators so recharging is real quick if needed.
Both of our RV's have a generator but we don't like or want the noise so we almost always just use the silent inverters for off grid electric power. The generators are a backup for charging if needed though. Honda 2000 on the 5th wheel and a 3400 watt built in propane generator on the Lance and has 2 - 30lb propane tanks. We really prefer boondocking where we want to rather than having to be in an overpriced cramped "CG slot" for like up to a week's stay.
I wire the truck when new with both + and - fused at both ends and a control high current switch for the positive side #2ga fine strand welder wire cable going from the dual alternators under the truck back to the 2 bed batteries and junction block which also is there for the 2 - #2ga wire leads coming from the 5th wheel which is controlled by a 500 amp mounted marine barrel switch. We live in the RV's when traveling etc for up to a week at a time and live just like we had shore power but with having no hookups at all or high CG fees either. We also have Passport America and for more than 20 years and sure do use it too when we want to. Nearly 2000 choices also for an overnight stay when desired.
Not cheap at all as we have plenty of money but we like and prefer quiet and being surrounded by real nature, not by noise and cramped costly quarters. Why? Maybe because having been a long time business owner and wife having been a trainer etc in a major travel corporation. Both at 77 and value our lifestyles and being together anywhere anytime always during our 58 year very happy marriage and our 54 years of serious extensive rv'ing and boating/travel and not about to stop now! Beside we sure do love our Lake Michigan shoreline location home and the area where we live too. Just simply 2 very happy old farts always!
A superb CC LB 4X4, GM HD Diesel, airbags, Rancho's, lots more
Lance Legend TC 11' 4", loaded including 3400 PP generator and my deluxe 2' X 7' rear porch
29 ft Carriage Carri-lite 5'er - a specially built gem
A like new '07 Sunline Solaris 26' TT