I'll show you how I installed 400 Ahr of Server Rack Lithium Batteries in my 2016 Winnebago View. Also why I didn't take the easy way of installing 2 BattleBorn batteries in the step well. I also kept my wet cell golf cart batteries, at least for now.

Server Rack Lithium Battery: https://www.signaturesolar.com/produc...
Lithium Converter: https://www.amazon.com/dp/B07DP3X16F?...
6AWG Welding wire: https://www.amazon.com/dp/B01DSFQVLK?...
2/0 welding wire Red and Black: https://www.amazon.com/EWCS-Gauge-Pre...
2/0 lugs for wire: https://www.amazon.com/dp/B073Y7JMRQ?...
Lug Crimper:https://www.amazon.com/dp/B00E1UUVT0?...
60 amp Circuit Break:https://www.amazon.com/dp/B07PBGMMNZ?...
40 amp Circuit Breaker: https://www.amazon.com/dp/B07D7VHJYK?...