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 > Best house battery?

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MDKMDK

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Posted: 08/01/20 03:09pm Link  |  Quote  |  Print  |  Notify Moderator

drumz wrote:

Well we don't use the motorhome that much. We vend at festivals, so we boondock alot. Sometimes we get electrical hook ups, it's rare though. The battery compartment is under the unit. And I guess I would rather not mess with checking water and stuff.I think the smoke/propane alarm runs down the battery, cause it's always dead after a few weeks of sitting. We don't leave the rv plugged in, as thats how our old rv caught on fire.
Isn't there a maint free deep cycle?


Deep cycles come as AGMs, too. Google is your friend.


Mike.
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time2roll

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Posted: 08/01/20 03:12pm Link  |  Quote  |  Print  |  Notify Moderator

drumz wrote:

Well we don't use the motorhome that much. We vend at festivals, so we boondock alot. Sometimes we get electrical hook ups, it's rare though. The battery compartment is under the unit. And I guess I would rather not mess with checking water and stuff.I think the smoke/propane alarm runs down the battery, cause it's always dead after a few weeks of sitting. We don't leave the rv plugged in, as thats how our old rv caught on fire.
Isn't there a maint free deep cycle?
Ah Ha!

Really need to install a disconnect switch so the battery does not discharge. AGM can sit fully charged for 8 to 12 months and still operate fine if it is disconnected. Left for dead the battery sulfates causing permanent capacity loss.

Next to check would be your charging system and I assume you are using a generator to give a daily recharge. Post the converter model numbers for best answers. If you park in the sun 100 to 300 watts solar would make a huge difference.


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Posted: 08/01/20 03:15pm Link  |  Quote  |  Print  |  Notify Moderator

drumz wrote:

Isn't there a maint free deep cycle?
Absolutely AGMs. Sorry couldn't resist. [emoticon]

How about a maintenance free Marine Deep Cycle battery. It's deep cycle because the label say so!

Or just what is it?

OK Yes they exist even true Deep Cycle. Hold your nose and raise your CC.


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Posted: 08/01/20 03:18pm Link  |  Quote  |  Print  |  Notify Moderator

time2roll wrote:

drumz wrote:

Well we don't use the motorhome that much. We vend at festivals, so we boondock alot. Sometimes we get electrical hook ups, it's rare though. The battery compartment is under the unit. And I guess I would rather not mess with checking water and stuff.I think the smoke/propane alarm runs down the battery, cause it's always dead after a few weeks of sitting. We don't leave the rv plugged in, as thats how our old rv caught on fire.
Isn't there a maint free deep cycle?
Ah Ha!

Really need to install a disconnect switch so the battery does not discharge. AGM can sit fully charged for 8 to 12 months and still operate fine if it is disconnected. Left for dead the battery sulfates causing permanent capacity loss.

Next to check would be your charging system and I assume you are using a generator to give a daily recharge. Post the converter model numbers for best answers. If you park in the sun 100 to 300 watts solar would make a huge difference.
Absolutely, I have full disconnect switches on both banks. [emoticon]

bobndot

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Posted: 08/01/20 03:59pm Link  |  Quote  |  Print  |  Notify Moderator

Yes, you can use a maintenance free wet cell. If you use two batteries, make sure they are both the same size and age otherwise the charging and depletion might be off sync.

Detectors : Pull the fuse when you store it or install a toggle switch on the detectors if its running down your batts.
Simply unscrew the detector, pull it off the wall and you will see the two thin wires powering it. Spice the toggle switch into the wiring and install the switch next to the detector. Use it when you need to.
Another option is to install a knife switch onto the battery terminal to kill the power when you park it.

2oldman

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Posted: 08/01/20 04:01pm Link  |  Quote  |  Print  |  Notify Moderator

drumz wrote:

.I think the smoke/propane alarm runs down the battery, cause it's always dead after a few weeks of sitting...We don't leave the rv plugged in, as that's how our old rv caught on fire.
No battery will survive that for very long. You may be a good candidate for solar if you won't plug in.

pnichols

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Posted: 08/01/20 04:15pm Link  |  Quote  |  Print  |  Notify Moderator

drumz wrote:

Well we don't use the motorhome that much. We vend at festivals, so we boondock alot. Sometimes we get electrical hook ups, it's rare though. The battery compartment is under the unit. And I guess I would rather not mess with checking water and stuff.I think the smoke/propane alarm runs down the battery, cause it's always dead after a few weeks of sitting. We don't leave the rv plugged in, as thats how our old rv caught on fire.
Isn't there a maint free deep cycle?


There are maint free liquid acid (non AGM) batteries - their tops are sealed so no access to their interior water/acid mix and no water needs to be, or can be, added.

However, probably you're best bet for a maint free RV battery would be an AGM battery (there isn't any liquid inside them).

Now regarding an AGM battery: A deep cycle type AGM battery is what you should use in your RV. That is ... a "true" deep cycle AGM battery - not a "combination" deep cycle/starting AGM battery that can be both a starting battery and (kindof) a deep cycle battery. AGM batteries come in both types.

I have a "starting" type AGM battery under the hood in my pickup. In my RV I have true deep cyle AGM batteries not intended for engine starting use. Of course they are zero maintenance and don't even have to be on a maintenance charger for months at a time - if it isn't convenient when one's RV isn't being used.

A true deep AGM battery will not be inexpensive, however. I had to get mine at a battery distributor. You probably can't walk into a Walmart or auto store and find these type AGM batteries. One source for them is marine supply stores. Other sources might be golf cart or industrial equipment battery suppliers.

For instance, the ones I have in our RV are popular for marine use, but almost never commonly found in RVs. Mine are "standard size" Group 31 12 volt true deep cycle AGM batteries that are rated at 115 amp hours each, and weigh about 72 lbs. each. The two of these hooked up in parallel provide 230 amp hours of storage, of which only about one-half of that 230 amp hours should be used at a time before charging.


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whemme

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Posted: 08/01/20 04:36pm Link  |  Quote  |  Print  |  Notify Moderator

My opinion on a lot of these types of questions is that if there truly was a one and only one best house battery, it would be the only one left on the market.


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pianotuna

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Posted: 08/01/20 05:21pm Link  |  Quote  |  Print  |  Notify Moderator

My next set will be SiO2. They can withstand 620 cycles to stone bone dead. Self discharge rate is 1.6% per month.


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp hours of AGM in two battery banks 12 volt batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

pnichols

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Posted: 08/01/20 08:02pm Link  |  Quote  |  Print  |  Notify Moderator

pianotuna wrote:

My next set will be SiO2. They can withstand 620 cycles to stone bone dead. Self discharge rate is 1.6% per month.


Don ... yeah, I kindof agree ... if:

1. They were available in Group 31 size instead of Group 27 size,
and

2. They could be charged directly by any good old run-of-the-mill engine alternator without burning up the alternator,
and

3. They could be charged if you wanted to and without damaging them or the converter by any good old run-of-the-mill 13.8 volt converter that used to come in many RVs.

IAW ... if certain SiO2 batteries were finally true 12V DROP-IN REPLACEMENTS for 12V deep cycle AGM batteries (the AGM batteries that charge good enough from a stock fixed voltage converter and don't ruin stock alternators) ... then I might consider the SiO2 batteries, eventually.

IMHO ... I feel that Battle Born batteries aren't quite there yet unless you have plenty of $$$$ to spend AFTER spending the $$$$ for the BB batteries themselves. [emoticon]

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