Need New Battery, Auto Or Deep Cycle

I would not use an auto battery, although if always plugged in, it may work. An RV/marine battery is a better choice than auto, and similar in price. You don't really need a true deep cycle for your use.

Jerry

If you always have electric hookup, the only reason to have a battery is for the trailer emergency break-away switch. I know several contractors that just use a lawn mower battery on their small equipment trailers.

go with a rv/maring battery. won't cost any more and will last much longer, even in your limited use.

Sure a low cost start battery will serve the function as long as all goes as planned.
If you get stuck some place when the power goes out you may appreciate one night of having lights and furnace on the deep cycle.

There is nothing to be gained spending the extra money on a deep cycle in your case. Even if you do have the odd power failure at the campsite or want a minutes of light at the side of the road a car battery still has you covered even if not as well.

I'd get a sealed lead acid battery. Do make sure the converter only does 13.2 volts.

I'd tend to not plug in for storage, as doing so may shorten the battery life.

mbopp wrote:
If you always have electric hookup, the only reason to have a battery is for the trailer emergency break-away switch.

Actually that's not necessarily the case ... if the OP's trailer has a slide it may require a battery as a power source to operate the slide. Mine is a shallow sofa slide and will operate with just the converter supplying power but many larger slides do require a battery to power the slide mechanism.

I got a Marine/RV deep Cycle Battery at Walmart for 75 bucks. I think its made by Johnson Control. 75 bucks is a small price to pay in case you ever need the extra juice if you go off the grid.

I am using a new RV/Marine battery from my nephew's trolling motor. It has the same Amp hour rating as my three year old deep discharge battery, so I thought I would give it a try.

Our deep discharge battery will last us three days; that is more than enough time for us.

The only times we camped without electricity, was out west when we would overnight at a county park or other non-electric facility.

If you intend to do any amount of non-electric camping, that is another issue altogether.

Walmart deep cycle, will last forever.