Different RVs can have very different power requirements, which is why battery capacity choices matter. Lithium RV batteries from Epoch are available from compact 50Ah models through larger 460Ah options. The collection also includes 12V, 24V, and 48V configurations for different electrical systems. LiFePO4 technology can provide roughly twice the usable capacity of lead-acid batterie... https://www.epochbatteries.com/collections/rv-van-camper-lithium-batteries