Reply
 
Thread Tools Search this Thread Display Modes
 
Old 12-03-2017, 03:14 PM   #1
4 Rivet Member
 
Kensington , Maryland
Join Date: Jan 2016
Posts: 294
CTEK for AGMs

I'd like to use a CTEK charger to keep the AGMs in good shape while the trailer is sitting in the driveway (store mode). CTEK has been good to me for my cars so I've got some faith in that!

The Multi US 7002 looks like it will do the job?
__________________

__________________
2017 25' FC FB "Buck"
Too tall is offline   Reply With Quote
Old 12-03-2017, 03:34 PM   #2
Half a Rivet Short
 
2017 30' Classic
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 5,485
Hi

They certainly aren't cheap

They do have some that very specifically state they are good for AGM's. They also have some with temperature probes. Neither feature seems to make the cost any lower .... Last thing to do would be to match up the amp hours on the battery(s) with the rating on the charger. Since I don't know what AS you have, I can't guess at what batteries you are running .... In some cases the 2500 is the right answer.

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

Bob
__________________

uncle_bob is offline   Reply With Quote
Old 12-03-2017, 06:33 PM   #3
4 Rivet Member
 
Kensington , Maryland
Join Date: Jan 2016
Posts: 294
Got it Bob.
Ours is a 2017 FC 25 FB with solar.
Given your good advnce the CTEK 56-674 25000 has the capacity and than some. No kidding they are pricey.
__________________
2017 25' FC FB "Buck"
Too tall is offline   Reply With Quote
Old 12-04-2017, 07:14 AM   #4
Half a Rivet Short
 
2017 30' Classic
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 5,485
Hi

You should keep the batteries as a pair for maintenance. If you have the group 27 batteries, they are up around 200AH in that configuration. That's what puts you in 2500 land. The crazy "8 step" stuff they do requires a bit more current than you might think. The question (of course) is - to you really *need* that part of it? Since there is no way to turn it off, you get it if you need it or not.

Bob
uncle_bob is offline   Reply With Quote
Old 12-04-2017, 03:18 PM   #5
4 Rivet Member
 
Kensington , Maryland
Join Date: Jan 2016
Posts: 294
Thanks Bob. You make a good point. I'm more wed to the brand than anything. I've been using CTEK to keep my 51 chevy truck and an car I only drive in the summer happy for many years.
__________________
2017 25' FC FB "Buck"
Too tall is offline   Reply With Quote
Old 12-04-2017, 03:49 PM   #6
Half a Rivet Short
 
2017 30' Classic
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 5,485
Hi

The main knock on them seems to be cost. After that you get into things like "left it in the rain for ten years and it stopped working....". There are other less expensive ways to get the basic job done. Unfortunately there is no really accurate data on how reliable this or that gizmo is.

Bob
uncle_bob is offline   Reply With Quote
Old 12-07-2017, 06:37 AM   #7
4 Rivet Member
 
Kensington , Maryland
Join Date: Jan 2016
Posts: 294
CTEK is hooked up and chugging away in re-conditon mode due to the fact this battery was deeply discharged and only able to get it to 80%.

FWIIW The unit is substantial. It must weight 10 lbs! Nothing like the unit I've been using for cars. It even has a built in cooling fan, but it makes terrible espressos

Film at eleven.
__________________
2017 25' FC FB "Buck"
Too tall is offline   Reply With Quote
Old 12-08-2017, 07:49 AM   #8
Half a Rivet Short
 
2017 30' Classic
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 5,485
Hi

The 2500 is not at all tiny.

The fan and plugging it up with dirt is a caution you do see in some of the posts. It's probably worth popping the case open once a year and pulling the crud out.

Bob
uncle_bob is offline   Reply With Quote
Old 12-08-2017, 04:01 PM   #9
4 Rivet Member
 
Kensington , Maryland
Join Date: Jan 2016
Posts: 294
CTEK to the rescue. It finished the recovery cycle and shows a fully charged battery. I'm running thru. the "normal" cycle once than will give batteries a chance to settle down with nothing "on" and see if CTEK worked. Toes crossed.

If they don't hold a charge I'll take them out and have the local battery store test them.

Plan "b"?? Where, g-d forbid, is the best place to get a set of Lifeline GPL-24ts?

Wish me luck.

FWIIW and for newbs reading. I likely killed them from a week of camping with shore power and having the trailer battery switched to "use" the entire time. NOW after being on the forum for a while I'm learning this was a really bad idea.
__________________
2017 25' FC FB "Buck"
Too tall is offline   Reply With Quote
Old 12-08-2017, 04:44 PM   #10
4 Rivet Member
 
mikeinca's Avatar
 
2018 30' Classic
Santa Rosa , California
Join Date: Feb 2017
Posts: 406
Glad it looks like the 7002 seems to have recovered your AGM's for you. I have a 7002 that I use for the AGM battery in my Porsche and one that I'm using for the 6V AGM's in our AS.

I did a little research when I bought the first 7002. I contacted both CTEK and the OEM manufacturer of the battery in the Porsche to determine the correct maintenance setting on the charger for use with it's AGM battery. Both told me that the "snowflake" mode on the charger, represented by the "*" setting, was the one to use for that application, but apparently in can vary between brands of AGM batteries. FWIW, I've been using this mode for the trailer batteries as well. Just FYI.
__________________
“The good thing about science is that it's true whether or not you believe in it.”
― Neil deGrasse Tyson

2018 30' Classic Twin
2017 F250 4x4 6.7 max tow Platinum
200W portable solar
240Ah LifePo4 upgrade
mikeinca is offline   Reply With Quote
Old 12-08-2017, 06:49 PM   #11
4 Rivet Member
 
Kensington , Maryland
Join Date: Jan 2016
Posts: 294
Thanks Mike. Same same here. We both found CTEK for the same reason.

As Paul Harvey said "the rest of the story" soon.
__________________
2017 25' FC FB "Buck"
Too tall is offline   Reply With Quote
Old 12-09-2017, 04:45 AM   #12
4 Rivet Member
 
Kensington , Maryland
Join Date: Jan 2016
Posts: 294
The worst news. The CTEK will not take it too full charge. In post #9 the CTEK did show full charge however after letting the batteries settle down and attempting a second "normal" charge they are not charging to 100%.

The batteries must be damaged.

If anyone can suggest the best place to purchase two GPL-24T batteries I'd be grateful.
__________________
2017 25' FC FB "Buck"
Too tall is offline   Reply With Quote
Old 12-10-2017, 06:32 AM   #13
Half a Rivet Short
 
2017 30' Classic
Carlisle , Pennsylvania
Join Date: May 2017
Posts: 5,485
Hi

Lead is heavy stuff. With a few exceptions, you generally are better off finding a local dealer than shopping cross country. It's also a *lot* more convenient if it turns out warranty support is needed. A return to "where you bought it" means there are a few less questions .... I'd get the internet price from Mr Google and then make a couple of phone calls locally. A really quick look suggests that $250 delivered is a fairly good deal.

https://batteryguys.com/products/lif...nt=32270600516

Bob
uncle_bob is offline   Reply With Quote
Old 12-10-2017, 03:58 PM   #14
4 Rivet Member
 
Kensington , Maryland
Join Date: Jan 2016
Posts: 294
Good advice. I'm picking up from >> https://www.baltimorebattery.com
$257 and free delivery or not!!!
My worries are not over until I've got the Progressive Dynamics installed.
For the record that was not a complaint

Quote:
Originally Posted by uncle_bob View Post
Hi

Lead is heavy stuff. With a few exceptions, you generally are better off finding a local dealer than shopping cross country. It's also a *lot* more convenient if it turns out warranty support is needed. A return to "where you bought it" means there are a few less questions .... I'd get the internet price from Mr Google and then make a couple of phone calls locally. A really quick look suggests that $250 delivered is a fairly good deal.

https://batteryguys.com/products/lif...nt=32270600516

Bob
__________________

__________________
2017 25' FC FB "Buck"
Too tall is offline   Reply With Quote
Reply


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
Use Shore Power & CTEK Charger @ Same Time? Skip Stone Batteries, Univolts, Converters & Inverters 5 09-03-2017 09:44 AM
CTEK multi US 7002 battery charger Papa smurf Batteries, Univolts, Converters & Inverters 7 09-12-2016 09:40 PM
CTEK Battery Chargers wayneskid Electrical - Systems, Generators, Batteries & Solar 1 07-09-2011 12:13 PM
Battery Disconnect Switch, Solar & AGMs SilverGate Batteries, Univolts, Converters & Inverters 29 11-03-2010 10:52 AM
Checking condition of dual AGMs wayneskid Batteries, Univolts, Converters & Inverters 5 04-06-2010 01:58 PM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:31 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.