www.PNWJeep.com

Pacific NorthWest Jeep forum
It is currently Sat Oct 20, 2018 6:36 pm

All times are UTC - 8 hours




Post new topic Reply to topic  [ 8 posts ] 
Author Message
 Post subject: AGM bettery chargers
PostPosted: Sat Sep 30, 2017 7:11 am 
Offline
Pimp
User avatar

Joined: Fri Aug 04, 2006 9:08 am
Posts: 5845
Location: North Bend
Vehicle: 98-TJ
Battery in the TJ randomly went dead (3-4 volts) after sitting for 3 days.

My charger thinks it take it to 12 volts but the second you remove the charger it goes back to 3-4 volts in less than a second.

Pretty sure it's time for me to get a AGM specific charger/maintainer. Searching through some older posts looks like the Optima charger and a NOCO one is popular.

How are these chargers working for you all longer term? What one should I buy?

_________________
98 - TJ


Top
 Profile  
 
 Post subject: Re: AGM bettery chargers
PostPosted: Sat Sep 30, 2017 8:02 am 
Offline
Pimp
User avatar

Joined: Fri Aug 20, 2010 9:20 am
Posts: 2068
Vehicle: 04 LJ
I have multiple Deltran Battery Tenders, I have the waterproof one outside mounted to the side of the house where I park the jeep and trailer and I have the mulit bank unit on my workbench for the Powerwheels and Mustang Batteries.

I think there was a crawl article about running a lead acid battery in parallel to revive AGM batteries with a non AGM charger.

_________________
'04 LJ on 35's
'11 Jeep Extreme Trail Edition Camper on 35's
'97 ZJ TSi with lots of cutting


Top
 Profile  
 
 Post subject: Re: AGM bettery chargers
PostPosted: Sat Sep 30, 2017 8:19 am 
Offline
Pimp
User avatar

Joined: Fri Aug 04, 2006 9:08 am
Posts: 4747
Location: In your brain
If you pull it and get it to the shop we can bring it back to
Life then just get a battery tender to keep it alive.. you might have a draw too..

_________________
90 Jeep Comanche 4.0L AW4, 231 2 low Tom wood's SYE, Waggy Dana 44's 5:13 Detroit Clayton's long arms, 6" lift, 35" Maxxis Creepy's, Trail-Ready Beadlocks, Custom bumpers, 3x6 box tube rock rails,LOT'S OF BODY DAMAGE
04.5 Chev HD2500 ext.cab longbed, Dirtymax, Duramaxtuner ECM & Edge CTS moniter
Auburn Car Repair & Offroad. 253-939-5019


Top
 Profile  
 
 Post subject: Re: AGM bettery chargers
PostPosted: Sun Oct 01, 2017 6:49 pm 
Offline
Never go full Rich-ard
User avatar

Joined: Fri Aug 04, 2006 9:08 am
Posts: 35911
Location: Auburn, WA
Vehicle: V8 TJ
We have the Optima charger and it has worked well. You can also try a normal battery charger, hook up your AGM and a 2nd NORMAL battery w/ jumper cables and then put the charger on it.

_________________
Auburn Car Repair & Offroad, for ALL your offroad needs! 253-939-5019
http://www.auburncarrepair.com
Quote:
Overkill is under-rated

Quote:
When times get tough fat people get thin, thin people get dead.


Top
 Profile  
 
 Post subject: Re: AGM bettery chargers
PostPosted: Sun Oct 01, 2017 7:11 pm 
Offline
Im not a player, I just post alot.
User avatar

Joined: Sun Aug 23, 2009 7:50 pm
Posts: 1821
Location: OlyWA
Vehicle: 4500ish TJ, 2013 Raptor SCrew
I use the Noco 15000 (15A) unit and it's been very good. Restored an Optima red top that I thought was beyond saving. Hoping to do the same with an Odyssey I have here too. I looked at all the latest chargers and studied the technologies behind AGM batteries and using the correct charger. I don't think the Optima charger and most of the "smart" chargers are setup to properly charge AGM batteries. You need a fairly large amount of current (amps) to charge an AGM battery, especially when it's low on voltage.

Anyway, people have used the Optima charger with success but I've concluded on my own that the NOCO chargers are more suited as long as you're using a 15A or larger unit.

_________________
DukeEngineeringSolutions - Fab Parts and 3D Printing - PM me for whatever you need.
FullStack Motorsports - Shocks and Tuning in the PNW!


Top
 Profile  
 
 Post subject: Re: AGM bettery chargers
PostPosted: Sat Oct 07, 2017 10:07 am 
Offline
Village Elder

Joined: Fri Aug 04, 2006 9:08 am
Posts: 11109
Location: Reno, NV
Vehicle: '04 Jeep LJ, '72 Toyota FJ40 LandCRAWLer
I currently use the Optima charger for both my Optima and Odyssey batteries and they can be revived from dead very easily if the rigs have been sitting a long time. I recently added an Odyssey charger as well as a CTEK, both designed for AGM batteries and will be doing some testing with them. All of these are designed with a maintenance made where they can be left on the batteries indefinitely. I don't think you can go wrong with any of them, the CTEK being the smallest and easiest to deal with.

_________________
www.crawlmag.com


Top
 Profile  
 
 Post subject: Re: AGM bettery chargers
PostPosted: Sat Oct 07, 2017 10:58 am 
Offline
Pimp
User avatar

Joined: Fri Aug 04, 2006 9:08 am
Posts: 5845
Location: North Bend
Vehicle: 98-TJ
JeepStangGuy wrote:

I think there was a crawl article about running a lead acid battery in parallel to revive AGM batteries with a non AGM charger.


Did this and 24 hours later it was good to go. After it had power I could see that every illuminated switch was in the on position... Time to train Grandma, no kids playing in the Jeep.

_________________
98 - TJ


Top
 Profile  
 
 Post subject: Re: AGM bettery chargers
PostPosted: Sun Dec 24, 2017 8:00 am 
Offline
Pimp
User avatar

Joined: Fri Aug 04, 2006 9:08 am
Posts: 5845
Location: North Bend
Vehicle: 98-TJ
Ended up buying the smaller of the Optima chargers. So far I have been very happy with it.

_________________
98 - TJ


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 8 posts ] 

All times are UTC - 8 hours


Who is online

Users browsing this forum: No registered users and 5 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB® Forum Software © phpBB Group