Needed: better battery...

[HAL9001]

Originally Posted by royphillips

The best battery for a coach battery is a deep cycle battery because they are made to be charged and discharged a lot . AMG is a good battery for a starting battery but not for the trailer if they get drained all they time because they won’t last long

No lead-acid battery, even a deep-cycle model, can come close to the nearly 100% discharge rate of a LiFePO4, and they have about twice the life of a lead-acid.

When you compare the power output, the longevity, the weight, and the cost over time, the best battery for an RV that needs a lot of battery power is a LiFePO4. If you're not yet convinced, please do your own external research. This is not a battery forum. You won't get the best available and most comprehensive battery expertise and advice here.

[videoarizona]

You are beating a dead horse. We all agree lithium is the best. But the poster made it clear he couldn't afford one right now.

[JudyB]

Right there with you CAG..same in LS Vegas. We have a 2017 and are on #4…did a AGM for most recent replacement.

[HAL9001]

Originally Posted by videoarizona

You are beating a dead horse. We all agree lithium is the best. But the poster made it clear he couldn't afford one right now.

There's no harm in trying to convince him to change his mind. If cost is a major concern, then he should know that, over time, LiFePO4s can be a better financial choice. That's what convinced me to go with them. I had no intentions of spending that much at first on batteries for my RV, but I finally saw the sound logic in it.

I've stated many times in forum posts that I didn't want to spend over a specified amount yet others convinced me to reconsider with some highly valid points. I was ultimately very glad that they did despite my original trepidations.

[RogerR]

Two factors should be noted. One is cost at about $200 for 2 6 volt models plus core charge of 18 each if he doesn't have one to trade in. Add that he might have to buy a second battery box and a pretty hefty jumper cable to make these work.
Compare that to a no name( not Renogy or Battle Born ) lithium at $300 that doesn't need a box but can ride inside.

Other factor is weight. 2 golf cart batteries weigh in around 128 pounds. Compared to 27 pounds for a lithium.

[gymracer]

I'm sure lots of good help here, I have not read all. But for me there is only one reasonable answer. Generator. I can not for the life of me see why someone would buy a RV of any kind without one. Might as well have a tent. A furnace takes current and you won't run one over night on a battery.

[HAL9001]

Originally Posted by gymracer

I'm sure lots of good help here, I have not read all. But for me there is only one reasonable answer. Generator. I can not for the life of me see why someone would buy a RV of any kind without one. Might as well have a tent. A furnace takes current and you won't run one over night on a battery.

Generators are great but there are a lot of RV campgrounds that limit the use of a generator. Many don't allow their use at night.

I've run my furnace overnight many times on my dual LiFePO4s and still had plenty of power left in the morning. The furnace uses propane for heat, the electricity needed is primarily just for the fan.

[gymracer]

Guess I don't camp where I can't use a generator and I depend on it. I have ran my furnace all night without ever tuning the batteries down but not on a high setting. Traveling I just can't do without a generator. Never had a problem running one in a rest area or parking lot.

[KenS]

Everyone has an opinion, I can just tell you what I did in a similar situation. I have a 2017 Melbourne 24L that came from the dealer (used) in 2020 with a new 75 AH marine/starter deep cycle battery that was, for me, useless! I replaced it with a type 31 VMAXTANKS Xtreme Series XTR12-155 12 Volt 155Ah Heavy Duty AGM deep cycle. I live in New England and often camp fall and spring in the White Mountains where it routinely drops below freezing nights and this battery sails thru the night with the furnace set to 60-65 with zero problems with plenty of juice to spare. It was a tight fit but fit it did in the existing battery tray. measure carefully and have a strong back, it is a beast, but it works! see this thread for more on this subject.

https://www.jaycoowners.com/forums/f...ery-92807.html