Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×
RV Trip Planning Discussions

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Alpine Coach Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-23-2021, 01:10 PM   #1
Senior Member
 
Theturboman's Avatar
 
Join Date: Apr 2021
Location: Reche Canyon, CA
Posts: 197
Wet to AGM batteries

I know there has been a lot of conversation about batteries so mine is a simple question. Do you guys know if the original inverter/charger will be enough to charge 4 AGM's- I believe it will, just looking for 1st hand knowledge
__________________
Bruce and Doreen
2002 Alpine 38 FDDS 400
2006 Jeep Commander Hemi
Theturboman is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 09-23-2021, 01:22 PM   #2
Senior Member
 
J Birder's Avatar
 
Join Date: Feb 2012
Location: Lake County, IL
Posts: 1,545
The answer to the question you asked, is yes. Any 12 volt charger will charge your batteries.


The question you should have asked is "if the original inverter/charger will be enough to charge 4 AGM's in a reasonable length of time. In order to answer that, we need to know what charger you have, and how many amp-hours of battery you have.


Joel
__________________
Retired electronics engineer. Avid paddler & birder.
2011 Silverado 2500HD, diesel, 4x4,crew cab, 8' bed
Palomino Puma 253FBS (27' 5er) & '94 19' Class B
J Birder is offline   Reply With Quote
Old 09-23-2021, 01:46 PM   #3
Senior Member
 
Join Date: Jun 2018
Location: SoOC
Posts: 519
Question

Considering this as well, but is there not a differing charging profile as well?
__________________
2007 Alpine SE 34FDDS + Cherokee Trailhawk
whalepirot is offline   Reply With Quote
Old 09-23-2021, 01:52 PM   #4
Senior Member
 
J Birder's Avatar
 
Join Date: Feb 2012
Location: Lake County, IL
Posts: 1,545
I asked Progressive, and their answer (in writing) was that the charge profile for AGM batteries is sufficiently similar to that for wet cell batteries that the same charger will handle both.


Joel
__________________
Retired electronics engineer. Avid paddler & birder.
2011 Silverado 2500HD, diesel, 4x4,crew cab, 8' bed
Palomino Puma 253FBS (27' 5er) & '94 19' Class B
J Birder is offline   Reply With Quote
Old 09-23-2021, 02:09 PM   #5
Senior Member
 
Join Date: Oct 2014
Posts: 3,897
Quote:
Originally Posted by J Birder View Post
I asked Progressive, and their answer (in writing) was that the charge profile for AGM batteries is sufficiently similar to that for wet cell batteries that the same charger will handle both.


Joel

This is correct. Some smart chargers do have a separate charging algorithm for AGM's, but if not they are VERY close to wet cells.


And, yes, your OE inverter/charger will work just fine. Certainly not worth big $$ for a little faster charge rate. The pay out would be NEVER.
__________________
Brett Wolfe
Ex: 2003 Alpine 38FDDS. Ex: 1997 Safari Sahara. Ex: 1993 Foretravel U240
wolfe10 is offline   Reply With Quote
Old 09-23-2021, 02:12 PM   #6
Senior Member
 
Jeep401's Avatar
 
Join Date: Nov 2017
Location: Marysville, WA
Posts: 464
I don't know the model of my charger/converter off hand, but it has a AGM setting. 05, 36FDDS.
__________________
Angelo & Leslie
2005 Alpine 36FDDS #75268
MARYSVILLE, WA.
Jeep401 is offline   Reply With Quote
Old 09-23-2021, 03:22 PM   #7
Senior Member
 
Theturboman's Avatar
 
Join Date: Apr 2021
Location: Reche Canyon, CA
Posts: 197
Main reason for me is extra reserve

I have Trojan 6 year old T105 rated at
Capacity minutes @25amps 447
minutes of discharge @25amps 225

Lifeline GPL-6CT just a little taller
Capacity minutes @25 amps 600
minutes of discharge @25 amps 300

Pretty good improvement for me who dry camps a lot with a residential fridge
__________________
Bruce and Doreen
2002 Alpine 38 FDDS 400
2006 Jeep Commander Hemi
Theturboman is offline   Reply With Quote
Old 09-23-2021, 03:27 PM   #8
Senior Member
 
paul65k's Avatar


 
Alpine Owners Club
Join Date: Nov 2015
Location: Lake Havasu City, AZ
Posts: 2,259
Quote:
Originally Posted by Theturboman View Post
Main reason for me is extra reserve

I have Trojan 6 year old T105 rated at
Capacity minutes @25amps 447
minutes of discharge @25amps 225

Lifeline GPL-6CT just a little taller
Capacity minutes @25 amps 600
minutes of discharge @25 amps 300

Pretty good improvement for me who dry camps a lot with a residential fridge
I am guessing that you more than likely have the Xantrex Freedom 458 inverter charger installed???

There is a specific charge profile that you can set from the control panel as well as the capacity (Ah) that will tell the charger how to most effectively charge your bank with 3 phases (Bulk, Absorb, float) of charging.

AGM batteries do charge at a higher voltage than flooded batteries and the profile will handle this for you automatically..... it's in the manual and easy to set up/change.

This is also the profile people use when upgrading to Lithium batteries for future reference....we did this for almost a year ourselves before upgrading the inverter.

Cheers!
__________________
Paul & Jean
2001 Alpine 36FDDS (74291)-1600W Solar, 13,440Wh (525Ah @24V) LiFePO4
2019 Jeep Grand Cherokee Trailhawk (Hemi)
2006 Alpenlite 32RL - Sold
paul65k is offline   Reply With Quote
Old 09-23-2021, 09:32 PM   #9
Senior Member
 
Join Date: Jan 2021
Posts: 1,113
If you can squeeze 6 batteries in the bay, you’d have more capacity at half the price with the T-105 FLA’s or something similar. The Lifeline AGM’s are getting into lithium price territory.

With the exception of not having to add water, AGM’s have all the negative attributes of FLA’s at 2-3 times the price. I went back and forth over the AGM vs Lithium decision and opted to install 420Ah of Lithium with just 4, 23lb batteries. Out went 360lbs of golf cart batteries.

I understand the question was about the charger, not about a difference in battery chemistry. At $459/ea for the Lifelines, you’re looking at over $1800 for 300Ah’s of useable capacity at 50% DOD. Thats $6/Ah or $600/kWh.
Kid Gloves is offline   Reply With Quote
Old 09-23-2021, 10:41 PM   #10
Senior Member
 
paul65k's Avatar


 
Alpine Owners Club
Join Date: Nov 2015
Location: Lake Havasu City, AZ
Posts: 2,259
Quote:
Originally Posted by Kid Gloves View Post
If you can squeeze 6 batteries in the bay, you’d have more capacity at half the price with the T-105 FLA’s or something similar. The Lifeline AGM’s are getting into lithium price territory.

With the exception of not having to add water, AGM’s have all the negative attributes of FLA’s at 2-3 times the price. I went back and forth over the AGM vs Lithium decision and opted to install 420Ah of Lithium with just 4, 23lb batteries. Out went 360lbs of golf cart batteries.

I understand the question was about the charger, not about a difference in battery chemistry. At $459/ea for the Lifelines, you’re looking at over $1800 for 300Ah’s of useable capacity at 50% DOD. Thats $6/Ah or $600/kWh.
Seriously if you 're thinking of spending this kind of $$ on AGM you should seriously take a look a these. You can actually buy 2 of these and have the same usable capacity as 4 Lifelines....while you're at it why not just buy 4 of these and have 2X the usable capacity

https://www.walmart.com/ip/seort/526228101

If you're gonna spend that much money on Lead-acid batteries then just save yourself some serious $$ and just buy 4 at Costco for a few years when Lithium will have replaced Lead-acid much like LED TV's have made tube TVs obsolete ..... my .02
__________________
Paul & Jean
2001 Alpine 36FDDS (74291)-1600W Solar, 13,440Wh (525Ah @24V) LiFePO4
2019 Jeep Grand Cherokee Trailhawk (Hemi)
2006 Alpenlite 32RL - Sold
paul65k is offline   Reply With Quote
Old 09-23-2021, 10:45 PM   #11
Senior Member
 
Theturboman's Avatar
 
Join Date: Apr 2021
Location: Reche Canyon, CA
Posts: 197
Quote:
Originally Posted by Kid Gloves View Post
If you can squeeze 6 batteries in the bay, you’d have more capacity at half the price with the T-105 FLA’s or something similar. The Lifeline AGM’s are getting into lithium price territory.

With the exception of not having to add water, AGM’s have all the negative attributes of FLA’s at 2-3 times the price. I went back and forth over the AGM vs Lithium decision and opted to install 420Ah of Lithium with just 4, 23lb batteries. Out went 360lbs of golf cart batteries.

I understand the question was about the charger, not about a difference in battery chemistry. At $459/ea for the Lifelines, you’re looking at over $1800 for 300Ah’s of useable capacity at 50% DOD. Thats $6/Ah or $600/kWh.
I may or may not have a connection on batteries that I can buy cheaper then Costco batteries
__________________
Bruce and Doreen
2002 Alpine 38 FDDS 400
2006 Jeep Commander Hemi
Theturboman is offline   Reply With Quote
Old 09-23-2021, 10:51 PM   #12
Senior Member
 
Theturboman's Avatar
 
Join Date: Apr 2021
Location: Reche Canyon, CA
Posts: 197
Quote:
Originally Posted by paul65k View Post
Seriously if you 're thinking of spending this kind of $$ on AGM you should seriously take a look a these. You can actually buy 2 of these and have the same usable capacity as 4 Lifelines....while you're at it why not just buy 4 of these and have 2X the usable capacity

https://www.walmart.com/ip/seort/526228101

If you're gonna spend that much money on Lead-acid batteries then just save yourself some serious $$ and just buy 4 at Costco for a few years when Lithium will have replaced Lead-acid much like LED TV's have made tube TVs obsolete ..... my .02

I will do this probably do this if my connection doesn't come through but then I need the charger. I am a Magna distributer so I could make it happen
__________________
Bruce and Doreen
2002 Alpine 38 FDDS 400
2006 Jeep Commander Hemi
Theturboman is offline   Reply With Quote
Old 09-23-2021, 11:08 PM   #13
Senior Member


 
Winnebago Owners Club
Join Date: Sep 2015
Posts: 1,420
I just replaced my old Dimensions 2000 watt original equipment on my 2006 Winnebago Journey. The inverter portion fried, still charged, but wanted an upgrade. Went from a MSW to a PSW inverter. The old dimension, when I took it out had a little switch on the side that just said "flooded, AGM or Gel" So yes it could be changed.

I have 3 100ah flooded. When I went in to program it for flooded, I read what each profile does. The AGM was .1 volt higher than the flooded for bulk. The float charge was the same. So yes, if you have AGM and set it to that profile, it would charge slightly faster and more completely than and older charger set to flooded. But it is so close that either would work.

I don't boondock much, and $68 for a flooded Duracell on sale at Sam's vs $276 for an AGM made the decision easy.
__________________
2006 Winnebago Journey
39K
Cat C7
amosnandy is offline   Reply With Quote
Old 09-23-2021, 11:50 PM   #14
Senior Member
 
Bobby F's Avatar
 
Join Date: Aug 2019
Location: MN
Posts: 1,792
Quote:
Originally Posted by Kid Gloves View Post
At $459/ea for the Lifelines . . .
Yikes! That's an AGM? 100aH?

Look at the huge Renogy 200aH AGMs. About $370 on Amazon. I have 2, pull them down to 25% regularly, don't need to worry about gas or corrosion, and the charge profile is so close to FLA that you don't need to change anything.


https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
__________________
------------------------------------

1993 Rockwood 28' Class C - Ford E-350 7.5L
Bobby F is offline   Reply With Quote
Reply

Tags
batteries



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
AGM Batteries/AGM Batteries Floridakamper Winnebago Industries Owner's Forum 8 09-19-2016 07:26 AM
Which 6volt Trojan batteries are best Wet flooded? AGM? Jeff753 Monaco Owner's Forum 6 01-29-2013 08:37 PM
Wet cell vs. AGM batteries dog walker Class A Motorhome Discussions 23 06-20-2012 11:18 AM
Mix AGM & wet-cell batteries? two2go MH-General Discussions & Problems 20 03-17-2011 02:12 AM
AGM Batteries, Are You Happy With Your AGM's? Are They The Answer? Lug_Nut Newmar Owner's Forum 36 11-25-2007 08:59 AM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 12:46 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.