Today, I just converted my Lead acid battery system on my R-pod 171 to lithium battery.
Components:
1 Battleborn Lithium battery 12v 100aH $949 (w/ free shipping)
1 Progressive Dynamics Converter modification for my WFCO power system $235 (includes shipping)
2 ANL fuse holders $14 ($11 for a 10-pack of 100A fuses)
2 24" 5AWG cables with ring terminals (5/16") already installed $11
1 Group 31 battery box.
Took me 1/2 a day to install. Longest period was installing the converter mod. You replace the DC board and swap the wiring/fuses to the new DC board as well as the battery cables. Then remove the converter power circuit board and replace it with the new one.
The fuse/fuse holders and cables are attached to the battery. The cable from the RV are attacked to the fuse blocks for additional safety. 100ah Lithium battery can send 200 amps for 30 seconds, enough time to start a fire with a short, so the fuses will give at 100 amps.
So I guess you are wondering why I did this? Well for something simple as "creature comforts" My ice machine and 1Kw pure-wave inverter could kill a 100aH lead acid battery w/ solar charging in less than 3 hours (voltage alarm goes off) before filling the basket.
I setup the lithium battery (charged) with the same inverter and ice maker, I can fill the basket TWICE and still have power left over. Took my 200w solar charger and reprogrammed it for Lithium. The charger is a Victron MPPT 75/15 using battery clamps for a battery connection. After peaking the solar panels every 1/2 hour, the solar system recharged that battery in 6 hours.
So I bought all the other components needed to install this in my R-pod and the rest is history.