Lithium Conversion Kit — 12V
Dropping a LiFePO4 battery in where the wet cells were is only a third of the job. A lead-acid converter or alternator keeps charging it on the wrong profile, and without a shunt you are guessing at state of charge. This is the battery, a lithium-profile shore charger, a shunt that actually counts amp-hours, and the fuse and holder the install needs.
The parts in the one-click kit lead this list, followed by the other sizes and brands that do the same job, so you can swap a part before you buy. The whole kit, priced and loaded in one click, is on the RV power bundles page.
How much battery do you need? The free RV Solar & Battery Calculator sizes the lithium bank from your daily loads and days off-grid.