My new to me and used RV came with two 12V House Batteries and would show 10.8 V just a short time after unplugging from shore power, so I knew I had to replace them. Some off brand car batts. Yep, th...
They stock them so didn't have to order them, they have them in the tire section of the store. They won't install them for you, but they'll drag them out to the RV and lift your old ones out and the new ones in...
The core charge is $15 each.
Remember to measure your battery space first before buying.