Reply
 
Thread Tools Display Modes
Old 04-23-2012, 06:45 PM   #1
Junior Member
 
Join Date: Apr 2011
Posts: 9
what will I gain?

Something similar has probibly been asked before. I searched but didn't find what I was looking for.

My year old tt came with an interstate srm-24 battery. I Was offered two new Optima yellow top D34/78 batteries for dirt cheap from an equipment maintainer friend. Battery specs give me a headache and I am looking for an example of how much better, if any, these will do when off the grid (compared to the interstate battery). I haven't boondocked but would like to sometime soon.

An example would be,so I am told, that my current battery would need recharging after a night using the furnace.... could I go longer before needing to recharge? I have already switched to led lights and led TV.
__________________

__________________
Homey55 is offline   Reply With Quote
Old 04-23-2012, 07:17 PM   #2
Senior Member
 
Join Date: Dec 2011
Location: Southwest Wyoming
Posts: 588
I can't speak for the Optimas but with one SRM24 you would be hard pressed to make it through the night. Not sure what you are paying for the Optimas but you may consider adding an additional SRM24. Do you plan to charge batteries with a genny during the day? If so the 2 SRM24s would get you by. Not optimum, but it would work.
__________________

__________________
2012 Grey Wolf 19RR
2008 Dodge 2500 CTD

Nights camped 2012 - 35
Nights camped 2013 - 46
rkswyo is offline   Reply With Quote
Old 04-23-2012, 08:31 PM   #3
Site Team - Lou
 
Herk7769's Avatar
 
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,169
Optima D34/78 Yellow Top Battery - 750 CCA: BatteryMart.com

There is also a 25 dollar mail in rebate.

NOTE: These are DUAL purpose batteries which means they are poor performers at both starting engines AND house batteries.

At 55 Ah / 750CCA they pretty much suck for what you want to do. The series 24 battery you currently have in the camper is a 70AH battery.

With two of those you would have 140 AH; with two yellow tops you would have 110 AH.

You can buy a second SRM-24 for 90 bucks.

Interstate SRM-24 Deep Cycle Marine & RV Battery 550 CCA


Your call.
__________________

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 offline   Reply With Quote
Old 04-23-2012, 08:35 PM   #4
Phat Phrog Stunt Team
 
TURBS's Avatar
 
Join Date: Aug 2011
Location: Iowa
Posts: 34,337
whats the specs for a group 27 lou ?
so as he might compare some more apples .
__________________
TURBS is offline   Reply With Quote
Old 04-23-2012, 08:45 PM   #5
Junior Member
 
Join Date: Apr 2011
Posts: 9
Thanks for the replies. Exactly what I was looking for. A second srm24 would be a better choice. Some reason I thought the optima would have been better. I stand corrected.
__________________
Homey55 is offline   Reply With Quote
Old 04-23-2012, 08:46 PM   #6
Site Team - Lou
 
Herk7769's Avatar
 
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,169
Quote:
Originally Posted by f1100turbo View Post
whats the specs for a group 27 lou ?
so as he might compare some more apples .
Well the group just describes the physical size of the battery; not its capacity. That is why battery banks have to be made up of identical batteries. My Deka DC-24 is a 75 AH battery (I have a pair of them).

For comparison the SRM-27 is a 78 AH battery and the Deka DC-27 is an 86 AH battery.
__________________

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 offline   Reply With Quote
Old 04-23-2012, 08:53 PM   #7
Phat Phrog Stunt Team
 
TURBS's Avatar
 
Join Date: Aug 2011
Location: Iowa
Posts: 34,337
Quote:
Originally Posted by herk7769 View Post
Well the group just describes the physical size of the battery; not its capacity. That is why battery banks have to be made up of identical batteries. My Deka DC-24 is a 75 AH battery (I have a pair of them).

For comparison the SRM-27 is a 78 AH battery and the Deka DC-27 is an 86 AH battery.
so what would be the point of having a group 27 ? its bigger and heavier so why the slight change in ah ?
__________________
TURBS is offline   Reply With Quote
Old 04-23-2012, 09:01 PM   #8
Site Team - Lou
 
Herk7769's Avatar
 
Join Date: Oct 2009
Location: South Eastern PA
Posts: 21,169
Quote:
Originally Posted by f1100turbo View Post
so what would be the point of having a group 27 ? its bigger and heavier so why the slight change in ah ?
Percentage wise it is a pretty big increase. Remember you are talking about a lot of amps being released for a long time to generate an amp hour.

House Battery - Amp Hours or Reserve Minutes
The bigger and thicker the plates; the LONGER the amps are available.

Starting Battery - Cold Cranking Amps
The thinner and lighter the plates; the FASTER the amps can be released.

Dual purpose Batteries - Both RC and CCA on the spec sheet.
Middle of the road plate size and thickness.
Attached Thumbnails
Click image for larger version

Name:	Battery Internals.jpg
Views:	76
Size:	54.3 KB
ID:	12665  
__________________

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 offline   Reply With Quote
Old 04-23-2012, 09:02 PM   #9
Phat Phrog Stunt Team
 
TURBS's Avatar
 
Join Date: Aug 2011
Location: Iowa
Posts: 34,337
gotcha !
__________________

__________________
TURBS 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 10:20 AM.