I currently have 2 interstate Deep Cycle, 5RM-24, 690 MCA / marine/rv batts in my 2014RLSS TT. the are 1.5 yrs old. I was wondering what are the best Batts to have for a TT? I have heard that some p...
If you properly maintain the existing batteries they should last 6 to 10 years. Lead/acid likes to be 100% charged as much as possible for long life. And very deep discharges (below 70%) will also shorten the life.
What is not working for you?
Otherwise if you find yourself parked in the sun much I recommend 200 to 300 watts of solar to keep then charged when camping or stored.