Custom RV builders often need to select battery capacity and voltage according to their specific electrical design. Lithium RV batteries provide flexible LiFePO4 options for different configurations. Epoch offers batteries from 50Ah to 460Ah and in 12V, 24V, and 48V versions. Their lightweight construction and roughly two-times greater usable capacity compared with lead-acid batteries... https://www.epochbatteries.com/collections/rv-van-camper-lithium-batteries