I just use one 12 volt group 30 Trojan and then run my little EU2000 Honda generator for about 90 minutes a day; 30 minutes in the morning and 60 minutes around dinner time. Wife like to have the 110 volt anyway for hairdrier, microwave, etc. We can go indefinitely this way.
2012 F150 FX4 Ecoboost, 2016 Surveyor 274BHS
2003 Yamaha FJR1300, Demco Premiere Slider
1969 John Deere 1020, 1940 Ford 9N, 1948 Ford 8N
Jonsered 535, Can of WD-40, Duct Tape
Red Green coffee mugs