I replaced them with Lithiums on my 2007 and added two more. Look at this page:I own a 2013 Legend EX and it's about time to replace my house batteries.
Wondering what other GW owners have done.
Replaced with new AGMs? Recommendations?
Is switching to lithium possible, or practical?
Anything else I should be thinking about while I'm doing this?
I only consider myself moderately talented compared to some others on this forum.Fascinating stuff, Mark. Regretfully, all of us are not quite so talented. But you've given me some ideas to think about once I get past these batteries.
If you have four 6V batteries, are they wired with two each in series and then the two groups in parallel? Lithiums in 6V are not that common. You would have to rewire to use 12V or switch to a 24V system. That would mean changing other stuff. Rewiring may not be that hard if the wires are already easily accessible.I have 4 battery wells -- 4 6v AGMs at 100w each.
I'm open to the lithiums but I'm not sure what other mods would be needed if I put them in.
After reading up on the lithiums, they seem like a better way to go if they won't create the need to replace a lot of existing components.
I'll check out the battery discussions you referenced and see if that helps me figure this out.
If you have four 6V batteries, are they wired with two each in series and then the two groups in parallel? Lithiums in 6V are not that common. You would have to rewire to use 12V or switch to a 24V system. That would mean changing other stuff. Rewiring may not be that hard if the wires are already easily accessible.
Can you provide a full list of electrical stuff you have? Converter / Inverter / Charger / Solar / Relay to the Starter battery / etc.? That would help with suggestions. It really helps to look at what you have and draw up an interconnect diagram. Then you can look into what changes can be made and how hard they are to accomplish.
My 2007 only has two wells with 12V batteries, so I added the two in the center storage area. With four 100 Ah batteries, I have plenty of power for about three days even if I can't charge and I have lots of ways to charge. We spent a week boondocking and I did not have to use the generator once.
Batteries are usually rated in Amp Hours (Ah). A 100 Ah Lithium can actually provide 100 Ah. A 100 Ah lead acid can only provide about 50 Ah, discharge it more than that and it's life is reduced. So, in real world use, my four 100 Ah Lithiums are equal to eight 100 Ah lead acids.
There are several people in the business of doing such updates. They often post on the other forums I listed. When you get a list and a diagram together, try posting it there and see what they say. Many seem to be in CA too.I'm 100 miles away from my RV right now, so I won't have the info you asked for, Mark, for several days. But I think you've pretty much identified where I'm going to have issues. This will not be work I do myself. I'm sure someone will do anything I want ... for a price. I'm happy I at least have AGMs now. Lithiums would make life easier.