Anyone else using an AGM battery ? - Defender Source
Defender Source  

Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions


Reply
 
Thread Tools
  #1  
Old December 9th, 2010, 10:40 AM
Uncle Douglas's Avatar
Uncle Douglas
Status: Online
Doug Crowther
A defender in every driveway-motto
D-90 Source Vendor
 
Join Date: Dec 2007
Location: Gods Country- Central Virginia
Posts: 11,844
Registry
Anyone else using an AGM battery ?

I went into the local battery warehouse with the intent to buy the largest battery I could fit in the seat box as the one in the Tdi failed to start it the other morning. We took measurements and went and looked @ what was available. The salesman got me hooked on an absorbed glass matt battery. He said they discharge slower, are more likely not to be hurt if fully discharged like a lead acid would, and in general are stronger batteries that don't sulphate up like lead acids do over time. He said they are the "new technology". Now that I'm out $180 does anyone else have any experience with these ?
I haven't done any research but is this what oddesey and others are or are they gel lead battery's ? Just curious.
__________________
Good judgement comes from experience,experience comes from bad judgement.

Dividing Creek Imports
Worldwide Vehicle Shipment and Importation Service
Restoration & Modification work


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

410.693.1391


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
Sponsored Links
Advertisement
 
  #2  
Old December 9th, 2010, 11:03 AM
ajh
Status: Offline
Andrew J. Hutton
1993 Defender 110 200TDI
Member
 
Join Date: Oct 2007
Location: Ottawa, Ontario, Canada
Posts: 735
Most 'sealed' batteries are AGM or gel cells. AGM is really the only way to go, Optima is the most popular brand. With any battery the trick is maintaining it, get a decent microcontroller charger and hook it up when you're not using the vehicle and it will maintain the charge and keep things healthy. The more you keep it topped up the better for the lifespan. I've been pretty poor at this in the past, but you can get decent 12A microcontroller chargers these days for $30, it's a good investment.
__________________
--

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
- Parts & Accessories Imported Weekly

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
- Like us on Facebook for a discount on parts!

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
- Handmade Soap ideal for Mechanics!
Reply With Quote
  #3  
Old December 9th, 2010, 11:26 AM
Overlander's Avatar
Overlander
Status: Offline
mark kellgren
in between D's in an 04 D2
Member
 
Join Date: Mar 2006
Location: Charlotte, NC
Posts: 6,531
Registry
AGM is the only way to go. I've been using Optima's for years. I have two yellow tops in my truck holding strong, but they'll be the last yellow tops.

Based on multiple recommendations and the editor's choice aware in Overland Journal (last edition), my next batteries will be the Sears Diehard Platinum's, which are AGM and like Optima yellow tops but better, stronger, faster, sexier, etc...
Reply With Quote
Sponsored Links
Advertisement
 
  #4  
Old December 9th, 2010, 11:46 AM
Uncle Douglas's Avatar
Uncle Douglas
Status: Online
Doug Crowther
A defender in every driveway-motto
D-90 Source Vendor
 
Join Date: Dec 2007
Location: Gods Country- Central Virginia
Posts: 11,844
Registry
This one I bought is a Deka. Much larger than the red and yellow tops- approx 14 inches long.
Deka is what all the watermen around here swear by brand wise so I went in search of a Deka and got hooked into the AGM.
I'm old school, bigger is better with batteries.

http://www.autobarn.net/eas9agm49.html
__________________
Good judgement comes from experience,experience comes from bad judgement.

Dividing Creek Imports
Worldwide Vehicle Shipment and Importation Service
Restoration & Modification work


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

410.693.1391


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #5  
Old December 9th, 2010, 05:12 PM
James Pierce's Avatar
James Pierce
Status: Offline
James Pierce Jr.
1995 D90 SW #314, 59 SII 88 HT
Member
 
Join Date: Nov 2003
Location: Oklahoma
Posts: 797
I purchased the Diehard Platinum 31M http://www.sears.com/shc/s/p_10153_1...=xsite_DieHard a couple of months ago after researching for days. A few days after purchasing it the Overland Journal article mentioned above came out confirming my research and decision. It is by far the best battery out there right now. It is a rebadged Odyssey battery for about 100 bucks less. Granted its not the sexy red color that the Odyssey is but when its under the seat doing its job I tend to forget its there and the color doesn't seem to affect the way it works.

We have been camping several times and I'm able to go 2 days with the ARB fridge plugged in without starting the truck to charge it. I tried that once with our jeep which has a blue top optima and it was dead.
Reply With Quote
  #6  
Old December 9th, 2010, 05:28 PM
Overlander's Avatar
Overlander
Status: Offline
mark kellgren
in between D's in an 04 D2
Member
 
Join Date: Mar 2006
Location: Charlotte, NC
Posts: 6,531
Registry
Quote:
Originally Posted by jamespierce View Post
I purchased the Diehard Platinum 31M http://www.sears.com/shc/s/p_10153_1...=xsite_DieHard a couple of months ago after researching for days. A few days after purchasing it the Overland Journal article mentioned above came out confirming my research and decision. It is by far the best battery out there right now. It is a rebadged Odyssey battery for about 100 bucks less. Granted its not the sexy red color that the Odyssey is but when its under the seat doing its job I tend to forget its there and the color doesn't seem to affect the way it works.

We have been camping several times and I'm able to go 2 days with the ARB fridge plugged in without starting the truck to charge it. I tried that once with our jeep which has a blue top optima and it was dead.
Actually, it's more equivalent to the yellow top than the red top, and when you match the figures up, it actually has more crank and storage than an equivalent yellow top.
Reply With Quote
  #7  
Old December 10th, 2010, 09:45 AM
ini88's Avatar
ini88
Status: Offline
Daniel Marcello
Alloy+Grit Creative Director
Member
 
Join Date: Aug 2005
Location: Queens, NY
Posts: 2,816
I've been reading up on these new Lithium Iron Phosphate (lifepo4) batteries they are using in motorcycles to cut the weight. They are super small and offer a huge amount of CCA. Also the CCA gains strength each time you use it continuously because the battery heats up and cranks harder. Obviously these are for motorcycles and the crank on a 1000cc is a lot different than a V8.

I hope one of these manufacturers makes one for a car soon because I would like to try it out.
http://www.antigravitybatteries.com/batteryspecs.html
http://www.turntechbattery.com/TurnT...y/Welcome.html
http://mavirykdesign.com/products.html

Sorry, that was far off subject, but whatever.
Reply With Quote
  #8  
Old December 10th, 2010, 10:17 AM
ajh
Status: Offline
Andrew J. Hutton
1993 Defender 110 200TDI
Member
 
Join Date: Oct 2007
Location: Ottawa, Ontario, Canada
Posts: 735
There's nothing stopping you, just wire enough of them in parallel to get the reserve capacity that you require. OK, cost might be stopping you, but Solar Cars have traditionally used about 1400 NiMH AA cells soldiered together into brick-packs and those work.
__________________
--

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
- Parts & Accessories Imported Weekly

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
- Like us on Facebook for a discount on parts!

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
- Handmade Soap ideal for Mechanics!
Reply With Quote
  #9  
Old December 10th, 2010, 11:29 PM
nikojo's Avatar
nikojo
Status: Offline
John
D90 SW -- 2.8PS
Member
 
Join Date: Jun 2008
Location: Fly over Country
Posts: 587
Two of these will fit into the compartment.........this is about the limit I believe

They are "mirror" images so the "+" poles are facing one another.

These have been great and seems like others really like them too.

Odyssey 34R-PC1500 34R-PC1500
PC1500RT AGM Sealed
Non-Spillable Battery

Odyssey 34M-PC1500 34M-PC1500
PC1500MS AGM Sealed
Non-Spillable Battery
Reply With Quote
  #10  
Old December 11th, 2010, 09:03 AM
Antichrist's Avatar
Antichrist
Status: Offline
Tom Rowe
Defender/Disco/Series/MoD
Member
 
Join Date: Feb 2006
Location: Atlanta, GA USA
Posts: 1,280
Unless things have changed a lot, most sealed batteries aren't AGM. Or at least a lot of them aren't. Maybe with Optima, Exide, Deka, Sears Platinum, Odyssey etc there are enough on the market it is now "most", but there are a lot of sealed batteries that aren't AGM. I have a Platinum in my Disco that I installed after my Exide Spiral cell finally died after 8 years. The warranty and specs of both are better that Optima, not to mention the bad reputation of Optimas of the past few years. The Platinum is the best of the 3. I've never really checked out Deka. As for the Lithium ion, there are some for cars, but last I looked they cost about $2,000.
__________________
Tom Rowe
Atlanta, GA

Four wheel drive allows you to get stuck
in places even more inaccessible.

62 88 Regular
67 109 6cyl NADA x2
74 Lightweight - The Antichrist
95 DI 5-speed
95 D90 5-speed
97 D1 Automatic
Reply With Quote
  #11  
Old December 11th, 2010, 09:06 AM
budz
Status: Offline
sal gorriceta
various rovers
Member
 
Join Date: Sep 2004
Location: brooklyn, new york
Posts: 268
Doug, I have extra brand new Optima yellow top, just email me if you need it.

Sal
Reply With Quote
  #12  
Old December 11th, 2010, 09:14 PM
Uncle Douglas's Avatar
Uncle Douglas
Status: Online
Doug Crowther
A defender in every driveway-motto
D-90 Source Vendor
 
Join Date: Dec 2007
Location: Gods Country- Central Virginia
Posts: 11,844
Registry
Quote:
Originally Posted by budz View Post
Doug, I have extra brand new Optima yellow top, just email me if you need it.

Sal

Thanks Sal but I'm good. Pretty sure I could weld with the CCA's this one has.
__________________
Good judgement comes from experience,experience comes from bad judgement.

Dividing Creek Imports
Worldwide Vehicle Shipment and Importation Service
Restoration & Modification work


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

410.693.1391


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote
  #13  
Old December 13th, 2010, 06:41 PM
OptimaJim
Status: Offline
Jim McIlvaine
None
Member
 
Join Date: Dec 2009
Location: Racine, Wisconsin
Posts: 7
Hello, I noticed your conversation regarding our batteries and wanted to offer some assistance. Although our batteries and many others (both AGM & flooded) are considered “sealed” batteries, all batteries can vent gas in extreme situations. For that reason, we always recommend that any battery installed in an enclosed location be properly-vented to the outside. Our group 27, 51, 34C, and 31 batteries all have ports for connecting a vent hose. Although people do it anyway, we would never recommend installing an unvented battery in any enclosed space, because there's a legitimate, albeit unlikely, safety risk involved.

For example, IF there is a voltage regulator failure, and IF the battery is severely overcharged, and IF this goes unnoticed, and IF the battery vents because the internal pressure exceeds the release pressure of the vents, the gasses are both flammable and toxic. This may sound like a lot of “ifs,” but attorneys and engineers get paid to plan for every worst-case scenario.

Since Doug mentioned the “g” word, I should clarify that gel batteries and AGM batteries are two very different technologies. In most situations, Optima batteries can be treated and charged just like any other lead-acid battery. However, “gel” or “gel/AGM” charger settings should be avoided, as they will not fully-charge an Optima and could damage it over time.

AGM batteries in general are a superior technology, when compared to flooded, lead-acid batteries. However, they can sulfate if they are discharged and left below 12.4 volts. As Andrew indicated, proper maintenance will extend the life of any battery and a quality battery tender or maintainer is an excellent investment for any vehicle that does not see daily use.

Larger batteries will generally provide more of everything- cranking amps, reserve capacity, etc... However, because many of these batteries are used in commercial applications or abusive, deep-cycle applications, the warranties can sometimes have numerous exclusions, like minimum voltage levels or a limited number of cycles and shorter warranty periods. You can view our warranty information here.

I cannot speak for other manufacturers, but our BlueTops with light-gray cases are identical internally to their YellowTop counterparts, but come with one less year on the warranty, primarily because marine applications tend to be more abusive than automotive applications- lots of deep discharges, infrequent use and more neglect. If any battery fails from a manufacturing defect, it is likely to do so well within the first year of ownership, if not the first month. If anyone has any questions about our batteries, I'll do my best to answer them.


Jim McIlvaine
eCare Manager, OPTIMA Batteries, Inc.
www.facebook.com/optimabatteries
Reply With Quote
  #14  
Old December 13th, 2010, 07:11 PM
James Pierce's Avatar
James Pierce
Status: Offline
James Pierce Jr.
1995 D90 SW #314, 59 SII 88 HT
Member
 
Join Date: Nov 2003
Location: Oklahoma
Posts: 797
Hmmm, I'm impressed with by the fact that Optima took the time to offer up the information above. I do have one question for Jim though.

Preface: I'm not trying to rant or muck up Doug's post I'm just curious.

Is it Optima's standard operating procedure not warranty defective batteries imeditetly? I'll give you an example. After talking to an optima rep who provided the same information as above we choose the blue top grey case for our JK. After 6 mos of normal use it began to fail. We took it to 4wheel parts for replacement and we were informed that we would have to leave the battery overnight for it to be charged and tested. Needless to say I was a little put out Not only is 4 Wheel Parts 45 min from my house but we were now without a car for an entire day and would have to make a second trip to p/u our battery. If I had purchased a cheep Walmart or Orielly's battery they would have tested it and given me a new one on the spot no questions asked. So my question for you is... Is this an optima policy or a 4 Wheel Parts policy? This experience played a large role in my decision to spend the extra money and purchase the Diehard mentioned above.

Thanks in Advance!
Reply With Quote
  #15  
Old December 16th, 2010, 10:13 AM
OptimaJim
Status: Offline
Jim McIlvaine
None
Member
 
Join Date: Dec 2009
Location: Racine, Wisconsin
Posts: 7
Hi James, we encourage all of our retailers to properly charge and check all batteries that have been returned under a warranty claim. While the exact methods may vary from one retailer to the next, the general procedure involves attempting to fully-charge the battery before testing it. For larger batteries, the charging process alone can sometimes take several hours. The reason we do this, is because many of the “bad” batteries returned to us are actually just deeply-discharged and work fine, once properly recharged.

Store policies may vary from one retailer to the next and may even change based on who is working behind the counter when you show up on a given day. However, industry-wide, correct warranty procedure is to “charge and check” all batteries returned under warranty.


Jim McIlvaine
eCare Manager, OPTIMA Batteries, Inc.
www.facebook.com/optimabatteries
Reply With Quote
  #16  
Old February 2nd, 2011, 04:33 PM
rlynch356's Avatar
rlynch356
Status: Offline
Robert Lynch
1995 NAS
Member
 
Join Date: Feb 2009
Location: NC
Posts: 2,208
Update - Just installed a Diehard Platinum 31M in my 90,
Dropped right in with the stock battery tie down angle bar.

notes:
1) has 2 sets of terminals on the top - convient for hooking up the winch directly to a seperate terminal or Amps or both.
2) Heavy sucker ~75lbs quoted.
3) fully sealed
4) decent price ~$259 better than the odyssey 2150 ~$350
__________________
Defenders don't wear out they just need more parts.

95' D90 - daily driver..
Reply With Quote
Reply

Lower Navigation
Go Back   Defender Source > Defender & Series Technical Discussions > Defender Technical Discussions

Tags
battery

Thread Tools

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
Battery Box Redux chris snell Smaller Projects 31 January 9th, 2016 03:34 PM
WNWPP D90 Dual Battery Tray! DJ Menasco Defender Technical Discussions 15 July 29th, 2009 12:00 AM
Battery Light/Tachometer Intermittant markurski Defender Technical Discussions 9 June 21st, 2009 09:18 PM
Battery Compartment under seat Flagg Defender Technical Discussions 11 May 15th, 2007 11:38 AM
Dead Battery! And Random Stuff Mike Hippert Misc. Chit-Chat 24 May 31st, 2004 08:49 PM


All times are GMT -5. The time now is 09:59 AM.


Copyright