Reply
 
Thread Tools Display Modes
Old 02-22-2013, 12:33 PM   #1
Senior Member
 
Join Date: Sep 2011
Location: Langley, BC
Posts: 582
What's the skinny on using sealed batteries?

Am pondering going to a sealed type battery and don't know anything about using them in an RV. I know you need a deep cycle type but what's the story on using golf cart ones and what about the "AGM" type? Same thing or what?

We will never do dry camping as we have a campground membership and enjoy having full services. Would we need around 70AH or can we get away with less? I am going to install LED bulbs everywhere which will lower the draw on the battery. These batteries aren't cheap and if a lower AH rating will work, it would save $$.

I am also wondering if a sealed battery can be installed inside our TT in an out of the way spot as long as I can get the wiring to it? Is it perfectly okay to have one of these batteries on it's side?

Any suggestions on brands for either quality or lower price or where to get the best pricing?

Thanks!
__________________

__________________
Gil & Deb & Dougal the Springer Spaniel
Langley, BC
myredracer is offline   Reply With Quote
Old 02-22-2013, 12:54 PM   #2
Phat Phrog Stunt Team
 
TURBS's Avatar
 
Join Date: Aug 2011
Location: Iowa
Posts: 34,337
Quote:
Originally Posted by myredracer View Post
Am pondering going to a sealed type battery and don't know anything about using them in an RV. I know you need a deep cycle type but what's the story on using golf cart ones and what about the "AGM" type? Same thing or what?

We will never do dry camping as we have a campground membership and enjoy having full services. Would we need around 70AH or can we get away with less? I am going to install LED bulbs everywhere which will lower the draw on the battery. These batteries aren't cheap and if a lower AH rating will work, it would save $$.

I am also wondering if a sealed battery can be installed inside our TT in an out of the way spot as long as I can get the wiring to it? Is it perfectly okay to have one of these batteries on it's side?

Any suggestions on brands for either quality or lower price or where to get the best pricing?

Thanks!
If your always going to have full hook ups
There's no real big need for "special" batteries or multiples.
If you need a new battery just buy another of what you already have.

You definitely don't need golf cart batteries or agm's

You only need multiples or the batteries you speak of if camping without shore power

Turbs
__________________

__________________
TURBS is offline   Reply With Quote
Old 02-22-2013, 01:04 PM   #3
Senior Member
 
Join Date: Sep 2011
Location: Langley, BC
Posts: 582
The only reason I thought of doing this is because I'd like to be able to install a tongue storage box and not have to worry about venting and corrosion or the loss of space inside the box. I'm looking at a nice little spot adjacent to the panel which allow an easy connection of the wires. If I were to go with a smaller AH sealed battery, it would take up less space inside the storage box or I could possibly mount it below and/or to the rear of the storage box.

I'm wondering if a small sealed battery in the 30 - 40 AH would suffice. It would save weight too I guess. The only time our batteries get used is when we are travelling and we are not plugged into AC at home or cg so our batteries get very little draw.

Also, is the standard charger okay for a sealed type battery?
__________________
Gil & Deb & Dougal the Springer Spaniel
Langley, BC
myredracer is offline   Reply With Quote
Old 02-22-2013, 02:46 PM   #4
Site Team - Lou
 
Herk7769's Avatar
 
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,165
Sealed batteries are not really "sealed"; they just have much smaller vents.

Due to the way the electrolyte is suspended in a "glass mat" (AGM) or Jelly (GEL type), hydrogen and oxygen generation due to the charging process is greatly reduced (but not eliminated).

Sealed batteries should still be in a vented compartment.
__________________

Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW
Herk7769 is online now   Reply With Quote
Old 02-22-2013, 03:26 PM   #5
Senior Member
 
Join Date: Sep 2011
Location: Langley, BC
Posts: 582
I phoned a battery shop and they sell one that is called an SLA type. Seems to be short for sealed lead acid. Not sure if an SLA type is different than an AGM type? They told me that golf cart batteries are only 6 volt, so two would be required.

Yes, I now understand that a sealed type still needs to be vented. And although they *could* be mounted on the side, it is recommended that they are mounted in the normal upright position.

Checked on ebay and am confused by the number of listings and descriptions plus they seem expensive on ebay. Our local battery shop has 70AH SLA ones for $190.

If I were to install an SLA or AGM battery inside an aluminum tongue box, does anyone know if it would have to be vented and inside a plastic battery box like a normal lead acid battery or could it be open inside the box?

It's starting to sound like maybe a sealed battery is not really the advantage I thought it would be.
__________________
Gil & Deb & Dougal the Springer Spaniel
Langley, BC
myredracer is offline   Reply With Quote
Old 02-22-2013, 08:38 PM   #6
Senior Member
 
VinceU's Avatar
 
Join Date: Dec 2011
Posts: 3,502
Quote:
Originally Posted by myredracer
I phoned a battery shop and they sell one that is called an SLA type. Seems to be short for sealed lead acid. Not sure if an SLA type is different than an AGM type? They told me that golf cart batteries are only 6 volt, so two would be required.

Yes, I now understand that a sealed type still needs to be vented. And although they *could* be mounted on the side, it is recommended that they are mounted in the normal upright position.

Checked on ebay and am confused by the number of listings and descriptions plus they seem expensive on ebay. Our local battery shop has 70AH SLA ones for $190.

If I were to install an SLA or AGM battery inside an aluminum tongue box, does anyone know if it would have to be vented and inside a plastic battery box like a normal lead acid battery or could it be open inside the box?

It's starting to sound like maybe a sealed battery is not really the advantage I thought it would be.
We used Gel Cel batteries for backup power supplies, onboard ships. I remember they need no maintenance, none, and last a good length of time. Mount in any position! I just checked, 200 for 50 AH, plenty for what you want. Primary use for your app. Would filter shore power from converter for flat 13.2 voltt for coach. Look up Gel Cel for multiple sites. No gas, no fuss.
__________________
VinceU is offline   Reply With Quote
Old 02-22-2013, 09:28 PM   #7
Denver, CO
 
garbonz's Avatar
 
Join Date: Jan 2013
Location: Denver, CO
Posts: 1,905
A gel cell or AGM are pretty equivalent for your use and they do not need to be vented or checked for fluid.

Many boatowners have these batteries belowdecks in compartments.

Any 12 v gel or AGM will do fine.
__________________
2007 Chevy 2500HD Classic LBZ Duramax/Allison (Stock)
2005 Bigfoot 1500C8.2 AWESOME
garbonz is offline   Reply With Quote
Old 02-23-2013, 07:55 AM   #8
Site Team - Lou
 
Herk7769's Avatar
 
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,165
This is what I have found on this topic.

It is recommended reading before you spend your money.

AGM Batteries are not completely sealed as they would explode if taken to altitude. They are "valve regulated" and vent gases both into and out of the battery. They vent small amounts of Hydrogen and Oxygen as the electricity is used and replaced.
Attached Files
File Type: pdf MF Batteries.pdf (92.1 KB, 27 views)
File Type: pdf Battery Ratings.pdf (178.9 KB, 26 views)
File Type: pdf What is the Peukert Effect.pdf (164.4 KB, 16 views)
File Type: pdf Trojan battery user guide.pdf (548.6 KB, 31 views)
File Type: pdf AGM Battery Care.pdf (1.77 MB, 26 views)
__________________

Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW
Herk7769 is online now   Reply With Quote
Old 02-23-2013, 09:30 AM   #9
Senior Member
 
VinceU's Avatar
 
Join Date: Dec 2011
Posts: 3,502
Here's what I was refering to, same Church, different pew. Gel cells work as advertised, never dealt with AGM, more expensive. Becoming popular in RV construction (AGM). Gel been around a long time.




"AGM batteries differ from flooded lead acid batteries in that the electrolyte is held in the glass mats, as opposed to freely flooding the plates. Very thin glass fibers are woven into a mat to increase surface area enough to hold sufficient electrolyte on the cells for their lifetime. The fibers that compose the fine glass mat do not absorb nor are affected by the acidic electrolyte. These mats are wrung out 2–5% after being soaked in acids, prior to manufacture completion and sealing.
The plates in an AGM battery may be any shape. Some are flat, others are bent or rolled. AGM batteries, both deep cycle and starting, are built in a rectangular case to BCI battery code specifications.


A gel battery (also known as a "gel cell") is a VRLA battery with a gelified electrolyte; the sulfuric acid is mixed with silica fume, which makes the resulting mass gel-like and immobile. Unlike a flooded wet-cell lead-acid battery, these batteries do not need to be kept upright. Gel batteries reduce the electrolyte evaporation, spillage (and subsequent corrosion issues) common to the wet-cell battery, and boast greater resistance to extreme temperatures, shock, and vibration. Chemically they are almost the same as wet (non-sealed) batteries except that the antimony in the lead plates is replaced by calcium, and gas recombination can take place.
The modern gel formulation and large scale production was from Otto Jache's and Heinz Schroeder's <US Patent 4,414,302> assigned to the German Co. Accumulatorenfabrik Sonnenschein GmbH. With gel electrolyte the separator was no longer such a critical, hard-to-make component, and cycle life was increased, in some cases dramatically. With gel electrolyte, shedding of active material from the plates was reduced.
More importantly, real gas recombination was used to make batteries that were not "watered" and could be called maintenance-free. The one-way valves were set at 2 psi, and this was high enough to have full recombination take place. At the end of charge when oxygen was evolved from overcharge on the positive plate it traveled through the shrink cracks in the gel directly to the negative plate made from high surface area pure lead and "burned" up as fast as it was made. This oxygen gas and the hydrogen adsorbed on the surface of the sponge lead metal negative plate combined to make water that was retained in the cell." Feom Wik
__________________
VinceU is offline   Reply With Quote
Old 02-23-2013, 09:46 AM   #10
Denver, CO
 
garbonz's Avatar
 
Join Date: Jan 2013
Location: Denver, CO
Posts: 1,905
Like I said, the Gels can be used with minimum or no ventilation they do not produce gas unless overcharged, which is a bad situation for ANY battery, and the regular lead acid flooded cells will corrode everything in sight.

A box with a small gel or AGM will do fine.

I have used the Gel's on my sailboat for MANY years as do many others without incident.

They have SLA's in UPC, sitting in offices for heavens sake.
__________________

__________________
2007 Chevy 2500HD Classic LBZ Duramax/Allison (Stock)
2005 Bigfoot 1500C8.2 AWESOME
garbonz is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 04:17 PM.