[Jack Houpe]

Tom I helped a friend convert his 45' Tiffin to solar with 400ah@48v of lithium. He followed our path with solar on the roof, 48v split phase inverter charger that supplies charge voltage to the lithium battery bank either from the sun, grid or both from there he has 2 victron mppt solar chargers that feed off the 48v lithium battery bank and charge his engine batteries and also his 12v house battery which are AGM batteries. The sun charges the 48v bank which charges his house battery and engine battery all the time, when he is plugged into the grid it still charges everything so his coach is live all the time no matter what just like our coach. We have yet to convert our coach to lithium because our AGM batteries were new when we bought the coach, soon as I see them depleting in AH I will build a big 48v lithium battery but will keep the engine and house batteries AGM. C (charge and discharge) rate on lithium is very high and if you hook a lithium battery to a standard alternator it will not last long. The best part of lithium is the normal cycles on lithium is around 5000 cycles and you can use 80% of the AH rating rather than 50% of a normal LA or AGM battery. Another positive for lithium is weight verse AH rating, they are lite in comparison. The negative is you cannot charge them which temps get to around 30F, they must be heated or you must have a BMS that can be programed to turn the system off when it gets cold.