[jdarwin]

We have a 2019 3931FB. It came with 2 interstate grp 24 batteries. I found a solar web site promoting using 2 used 12VDC lithium batteries removed from medical equipment. These batteries have a built in BMS and cables for load balancing. They are only 40amp. The interstates are 85amp. My questions are 1. Can I drop these in without modifying anything? 2. Since lithium batteries are 92% efficient and can be drawn down more than lead acid, will they run as long or longer at the same load? 3. Are there other factors to consider? Thanks for helping out a newbie.