2019 31UL charger/converter location?

[Scha4er]

I'm upgrading to lithium, and trying to confirm my charger/converter will be compatible. There is nothing in my paperwork to describe the model and/or location of the converter. So I have no idea where to check. Anyone know? Can't seem to find it anywhere by google search either.

 

[Scha4er]

I found it, cancel this... haha. The panel at the foot of the bed, it is at the bottom

 

[dopalgangr]

I have the 2018 31UL. It came with two 27D Harris Deepcycle lead acid batteries attached together in parallel. I was thinking of replacing with one 100AH LI battery but I don’t know if I would need two to match the original lead acids because I don’t know what amp hour they are. Does anyone know what the originals were? I’m guess approx 100AH each so 200AH in parallel. If so should I get two 100Ah LI and attach in parallel or just go with one 200AH LI?

 

[Scha4er]

I purchased the LiTime 300 amph battery off of amazon. If you are replacing your old batteries, it doesn't matter.

 

[dopalgangr]

So you just have that one battery instead of two?

 

[Scha4er]

Yes, my two AGM batteries were only 80amph. That is realistically only 40amph because you can't discharge past 50%. Now I have 1 300amph and I can go down to zero (I only go down to 10%). If I did it all over again, I would buy two, I only had room for one because they are larger than the old batteries. I had a welder just modify my battery tray to fit the depth of the battery. If I did it again I would have had him make the tray wider as well so I could fit two.

 

[dopalgangr]

Thanks for the info. Do you do a lot of off grid? I never off grid or use the inverter. But I think these are what the slide outs use?? That’s why I was thinking of just going with one 100AH LIpO. Which one on Amazon did you get? I see a lot of different makes

 

[Scha4er]

I got this one. It's even lower priced than when I bought it. I don't do a lot of dry camping, but we wanted to start. I tested this out in my driveway simulating watching TV for 5 hours and keeping the inverter on to run our residential refrigerator. I was able to get 36 hours before it got to 10%. Pretty damn impressive.

https://www.amazon.com/gp/product/B08K7HZ6KZ/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1

 

[dopalgangr]

That is impressive. Other than the tray mods and flipping the switch from LA to LI was there anything else that you had to do?

 

[Scha4er]

Nope, just make sure your inverter will work with it. I'm sure it will but I checked the manufacturer. The switch was a jumper on the board of my converter. Pretty easy to do once you find it.

 

[dopalgangr]

Sounds good, thanks again.

 

[youracman]

I have the 2018 31UL. It came with two 27D Harris Deepcycle lead acid batteries attached together in parallel. I was thinking of replacing with one 100AH LI battery but I don’t know if I would need two to match the original lead acids because I don’t know what amp hour they are. Does anyone know what the originals were? I’m guess approx 100AH each so 200AH in parallel. If so should I get two 100Ah LI and attach in parallel or just go with one 200AH LI?

This might help.
https://www.harrisbattery.com/product-category/rv-marine/?455_product_cat%5B0%5D=87

My 2020 came with 2 6v in series! Bought coach off consignment lot (PPL Houston) and the original owners had it 2 yrs and had 1500 miles on it. Couldn't get the Harris batteries to take a full charge ...... thinkin' with that little use, they may have been "brought back from the dead" once too often. The Harris batteries have some good performance ratings so I called Harris as there are no dealers listed in Denver. They quoted me $532 each plus shipping........ouch. I installed Group 27 AGM Duracells at $234 each. Not Harris, but adequate for my (mostly pole-to-pole camping) needs.

Best...........