New Coach Batteries

.

AGM is a bit more sensitive to undercharging. Best to verify the charging system meets the charging specs of the new battery.

Yes there are advantages to AGM. No corrosion, no water to check, some resistance to freezing, a deeper discharge is better tolerated, higher resting voltage, faster charging, higher CCA rating for high load items (less voltage sag).

No. AGMs need to be fully recharged frequently. That means you need to get them to where amps have tapered to 0.5a/100AH and hold the voltage at about 14.4 till that happens before dropping the voltage to the float voltage.

You must have an ammeter to tell you when you are there for amps, and a charger that can hold that voltage all the time it takes. I use my Trimetric for the ammeter job, and have an adjustable voltage converter (PowerMax LK type) to do the voltage part for my AGMs.

Only reason to have AGMs is if you need to mount them inside the RV where the fumes from a Wet battery cannot be allowed.

I loved my AGMs. Occasional dusting was the only maintenance.

"and then we switch to more federal lands in the mountains without electricity."

Federal land has current bushes PT ? :)


Purchase a true deep-cycle AGM battery and the differences really multiply especially if you have an inverter. If your converter is a Wifco, upgrade it.

Depends on what your boondocking is like. Do you boondock for long? Just a weekend or for weeks on end?
If just for the weekend maybe just stick with the cheap Marine battery. Fill with distilled water, never tap.
Do you have any solar?

For the campground phase of your camping experience then a small exit sign 12v battery would be enough to get you past the drive portion, you don't need hardly any battery, so then now you are just getting battery for that Fall when you boondock.

Boondocking in the fall when it gets cold means running the furnace? The furnace fan is a power hog, so after one night you will need more power than the battery has left. You need a big battery bank (two batteries) or a way to top off the one battery. Solar works perfect, but some ppl use generators for a few hours to charge back.

Hi Mex,

I guess I was up too early to comprehend what the OP said. Ty for pointing that out to me.

I prefer AGM. I prefer used Telcom jars as they don't cost an arm and a leg and the life of your first born son.

Proper charging is important, that statement applies to ALL battery types.

I will never place a "house" battery in the living quarters. It is a fine idea, until there is a failure. Then it quickly becomes a lousy idea. H2SO4 is not just an unpleasant smell.

There is nothing like not having to lay down in the snow to check electrolyte levels.

A good solar system with adequate amp hour capacity batteries would eliminate keeping the unit plugged in at home and mostly eliminate generator use when dry camping.

6 volt golf cart batteries are the way to go.

EVERYONE
READ THIS LOUD AND READ IT CLEAR


There is but one single solitary manufacturer of car jar size true deep cycle batteries in north America.

Rolls & Surrette

Not Trojan, not Exide, not Johnson Controls, not Deka, not GNB

but Rolls

And put a period behind it.

Regular and I mean REGULAR ORDINARY DAY IN AND DAY OUT car starting batteries of the 1960's and 1970's were just as cyclable as today's DEEEEEEEEEEP CYCLE RV batteries.

Yes separators have changed and through the cell wall interconnectors are different but the notion 6-cell batteries of today are different is a cruel marketing hoax.

Don't get me wrong. Car starting batteries do have THINNER and more porous plate paste.

In the 1970's it took a 150 pound 8-D battery to achieve 1,000 CCA.
Today my junior olympics size group 34 brags it offers 825 CCA This turd is half the size of a group 65 battery which has similarly thin porous plates

There are golf car batteries of which the better brands are built to do cyclable duty but they exhibit 475 CCA. Is it a miracle? No, it is a giant Federal Trade Commission Free CON JOB.

AGM is not free of Herb Tarlek grade BS. Those AGM batteries offer a ton of battery with .045" plates have just that, forty five thousandths thick plates and there is only one exception to this. That exception has plates in excess of a tenth of an inch thick.

But ignorance rules. Batteries are not insensitive. They need EXACTING care and 99% of buyers could care less about exacting care. The battery with the LEAST sensitivity is an AGM. They recharge until the electrics run into a stone wall then refuse to charge more. This rant is not a battery manual so if you want more info Rolls & Surrette and Concorde provide excellent ones free to download.

Self titled opinionated users come up with some of the most outrageous claims that defy common sense and automatically leads to their degree of truthfulness and even their perception of reality.

I tried bringing some light to this on this forum for what? Sixteen years?

And still, I read nonsense posts reinforced with agreement from similarly ignorant (they refuse to read Instructions or click on free legitimate information from two of the finest battery manufacturers on the face of the earth. But they take it online and preach the gospel about batteries.

THE QUEST is to find the LEAST OFFENSIVE CONVERTERS AND CHARGERS that will allow these batteries to lose the LEAST amount of capacity and deliver the maximum amount of lifespan.

A simple power supply like a Meanwell or Megawatt would DOUBLE or TRIPLE the life of an AGM battery but interest in how to do it is about on par with adopting a red-headed stepchild.

Yep bet your butt I'm disgusted and I'm frustrated today.

If they refused to discuss it publically then fine I have no qualms about that.