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General Diesel General Diesel For Sale Forum. |
02-21-2021, 12:53 PM
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#61
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Name: 4x4dually
Title: Moderator
Status: Not Here
Join Date: Jan 2007
Location: Stillwater, OK
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Posts: 31,812
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I'm really surprised to see all the AGM hatred. I have just never heard such bad things about them. Interesting for sure.
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02-21-2021, 01:34 PM
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#62
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Name: jasonc
Title: Too Much Time
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Posts: 4,412
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Another thing I don't like about the agm's, I deal with them on the boat side often. They'll drop the boat off and the batteries dead, I can hook up the charger and 15 mins later the lead acid battery is hot enough to fire the boat up.
It takes sometimes 2 or more hrs on the agm's with the correct charger.
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02-21-2021, 02:03 PM
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#63
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Name: 4x4dually
Title: Moderator
Status: Not Here
Join Date: Jan 2007
Location: Stillwater, OK
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Posts: 31,812
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Quote:
Originally Posted by jasonc
It takes sometimes 2 or more hrs on the agm's with the correct charger.
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I'd rather charge ANY battery slow than shove electrons in them so fast they boil.
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02-21-2021, 02:27 PM
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#64
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Name: J-Pipes
Title: Too Much Time
Status: Not Here
Join Date: Jan 2012
Location: Ohio
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Posts: 4,575
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Wait, you're supposed to use a different charger for agm batteries? I've got an older generic 1-1/2 amp charger I usually hook to stuff for a day or two at a time.
Sent from my SM-G975U using Tapatalk
__________________
2000 Dodge ext cab short bed, 6spd.
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02-21-2021, 02:50 PM
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#65
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Name: Marq92
Title: Too Much Time
Status: Not Here
Join Date: May 2012
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Posts: 952
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I think it is only necessary for smart chargers.
__________________
2001.0 QCLB 3500 4x4 3.55 Toyo M-55 255/85R16 Brown's/Goerend 48RE sonnax shafts/maxed count Alto clutches Carli/Deaver 3.0 EMF BJ's PSC 6 bolt box Synergy steering TheRetroShop HID projector retrofit VLED's DC Power 180A alternator W-T ground mod ISSPRO EV2's
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02-21-2021, 03:30 PM
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#66
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Name: Begle1
Title: Too Much Time
Status: Not Here
Join Date: Nov 2007
Location: Kihei, Maui
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Posts: 4,143
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Quote:
Originally Posted by 4x4dually
I'm really surprised to see all the AGM hatred. I have just never heard such bad things about them. Interesting for sure.
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They're definitely fragile to over-volting or over-discharging, they won't come back to life like a lead acid will. The "smart chargers" with an AGM mode might help that, I'm not sure exactly how those work. Obviously my alternator doesn't work differently if you put in an AGM or a lead acid.
But if you keep them in their happy zone, I like them just because they don't grow new forms of life every few months. I feel that's quite a benefit. I also have one behind my passenger seat, so I'd rather that not be an acid bomb.
__________________
1990 D-250 Regular Cab: Automatic transmission, turkey air horn, wires.
Last edited by Begle1; 02-21-2021 at 03:32 PM.
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02-21-2021, 04:35 PM
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#67
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Name: takedown95
Title: Too Much Time
Status: Not Here
Join Date: Aug 2011
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Posts: 2,841
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My experience with Optimas are basically what everyone else here has said. If you neglect them on the charging side they won't last long but they will certainly come back strong after a full discharge and will take physical abuse like no other, if you charge them back slowly.
Bottom line is I rarely have had a set of lead batteries last more than 5-6 years no matter how well I maintain them but I have Optimas that are now 11+ years old that are just as reliable as the day I bought them.
I invested in their small smart chargers and they paid for themselves in less than a year. I run Optimas in the boat, pulling truck, the motorcoach and the trailer and never had a failure. I never have run them in my daily driver until this year. So, time will tell.....
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02-21-2021, 05:13 PM
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#68
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Name: 4x4dually
Title: Moderator
Status: Not Here
Join Date: Jan 2007
Location: Stillwater, OK
Member`s Gallery
Posts: 31,812
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Quote:
Originally Posted by J-Pipes
Wait, you're supposed to use a different charger for agm batteries? I've got an older generic 1-1/2 amp charger I usually hook to stuff for a day or two at a time.
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They will take higher currents but only if the temp is right.
Batteries are like anything else. Patience pays.
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02-21-2021, 05:57 PM
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#69
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Name: biggy238
Title: Too Much Time
Status: Not Here
Join Date: Aug 2008
Location: Just North of Wrong
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Posts: 10,867
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Quote:
Originally Posted by jasonc
Another thing I don't like about the agm's, I deal with them on the boat side often. They'll drop the boat off and the batteries dead, I can hook up the charger and 15 mins later the lead acid battery is hot enough to fire the boat up.
It takes sometimes 2 or more hrs on the agm's with the correct charger.
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VW is currently charging, it's been on "battery repair" for 3 hours and says it's at 9%
BT dongle stuck in the cigarette adapter kilt it ded
Sent from my motorola one 5G using Tapatalk
__________________
Check out @bdmaximusworx
05.5 Campanella White TDi Jetta 5spd 45.5MPG
-Little Sexy
'10 Silver F250 CCLB 4X4 6.4L cummins Swapped
Insta @trash.panda250
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02-21-2021, 07:00 PM
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#70
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Name: jfaulkner
Title: Douche Hunter
Status: Not Here
Join Date: Sep 2007
Location: Ohio
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Posts: 5,864
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Quote:
Originally Posted by 4x4dually
I'm really surprised to see all the AGM hatred. I have just never heard such bad things about them. Interesting for sure.
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The math just doesn't work for me. Lead acid is around $100 for 36mo warranty (interstate), Interstate AGM same size is $165, Optima is ~$240. So multiply that x2 and the fact they are very unpredictable on life span I just don't see the love. Experience has shown I usually get 5yrs out of a set unless something ruins them. (had a few alternators cook them)
Sort of like buying furniture, I don't feel so bad spilling stuff on a $500 recliner as I do ruining a $2000 one.
__________________
Quote:
Originally Posted by StainlessRRA
Flipping your mirrors up when you don't tow? That serves no purpose other than to let me know that you are a douche, from a distance.
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02-21-2021, 09:20 PM
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#71
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Name: displacedtexan
Title: $500 PREMIUM MEMBER
Status: Not Here
Join Date: Feb 2008
Location: Mobilehoma
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Posts: 13,876
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Quote:
Originally Posted by 4x4dually
I'm really surprised to see all the AGM hatred. I have just never heard such bad things about them. Interesting for sure.
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Same.
I've run them with no issues. Oddesy back in the day, Orilley now.
Less corrosion, won't spill or explode...
__________________
I talk loud.
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02-22-2021, 07:07 AM
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#72
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Name: 4x4dually
Title: Moderator
Status: Not Here
Join Date: Jan 2007
Location: Stillwater, OK
Member`s Gallery
Posts: 31,812
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Quote:
Originally Posted by jfaulkner
The math just doesn't work for me. Lead acid is around $100 for 36mo warranty (interstate), Interstate AGM same size is $165, Optima is ~$240. So multiply that x2 and the fact they are very unpredictable on life span I just don't see the love. Experience has shown I usually get 5yrs out of a set unless something ruins them. (had a few alternators cook them)
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I hear ya on the math. Like I said, I've never had red tops fail at less than 7-9 yrs so my personal experience has been stellar. I'm sure quality has dropped. Everything else has.
This is the charger I use. It will recover batteries normally. It wasn't very expensive.
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02-22-2021, 10:25 AM
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#73
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Name: 1320Cummins
Title: 2G Collector
Status: Not Here
Join Date: Feb 2009
Location: Houston TX
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Posts: 330
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Wow! This threads turning into an old school ATS vs DTT vs SunCoast death match!!!
Ill briefly add to it.
AGM- Optima yellow top.
L/A- Continental followed by Deka
All three have been outstanding in terms of service life and construction.
Never had single corroded terminal with any of the above.
__________________
01 2500 QC SB 47RE 4X2
02 3500 QC 48RE 4X4
96 2500 CC NV4500 4X4
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02-22-2021, 08:42 PM
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#74
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Name: mhuggler
Title: One piece at a time
Status: Not Here
Join Date: Sep 2007
Location: Uno, Pa.
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Posts: 1,523
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I haven’t bought any new vehicle batteries for many years since I got a digital battery desulphator. I find a couple sulphated batteries in the core pile at work, put them on the pulsetech for about a week and they work like new for 3-5 years. Can’t do that with an AGM!
__________________
2002 2500 4x4 ETH/DEE-F1 Mach 5's/62/65/12/Smarty/ATS Ex.manifold/AFE intake/TST Comp./.020 marine gasket/o-ringed/ARP studs/5"stacks/Airdog 150/Isspro guages/Southbend 3600 DD/3.54 gears/leveling kit/Bilstein 5100frt,5150rr/37" BFG A/T's on 18" Eagle 114's/Borgeson SS/DSS
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02-23-2021, 05:57 AM
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#75
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Name: Red Sleeper
Title: Too Much Time
Status:
Here
Join Date: Aug 2009
Location: Lone Star State
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Posts: 4,596
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This is a common topic of discussion among myself and few other cousin’s. We all have diesels so we all buy two batteries at a time.
One of us even made a spreadsheet to make a fair comparison. End of it all, everstart AGM’s (group 34) from Walmart have the most cranking amps and the longest warranty period for the dollar.
__________________
Nick J
'14 Silverado LTZ 5.3 4wd
'05 Cummins QCSB 4wd 48re
'91 Cummins w350 5spd
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02-23-2021, 08:07 AM
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#76
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Name: biggy238
Title: Too Much Time
Status: Not Here
Join Date: Aug 2008
Location: Just North of Wrong
Member`s Gallery
Posts: 10,867
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Quote:
Originally Posted by mhuggler
I haven’t bought any new vehicle batteries for many years since I got a digital battery desulphator. I find a couple sulphated batteries in the core pile at work, put them on the pulsetech for about a week and they work like new for 3-5 years. Can’t do that with an AGM!
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I just did? Battery was down at least a month
It cranked the car at %51 after about 7hrs in battery repair.
Sent from my motorola one 5G using Tapatalk
__________________
Check out @bdmaximusworx
05.5 Campanella White TDi Jetta 5spd 45.5MPG
-Little Sexy
'10 Silver F250 CCLB 4X4 6.4L cummins Swapped
Insta @trash.panda250
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02-23-2021, 10:44 AM
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#77
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Name: mhuggler
Title: One piece at a time
Status: Not Here
Join Date: Sep 2007
Location: Uno, Pa.
Member`s Gallery
Posts: 1,523
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Quote:
Originally Posted by biggy238
I just did? Battery was down at least a month
It cranked the car at %51 after about 7hrs in battery repair.
Sent from my motorola one 5G using Tapatalk
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If the battery accepted a charge, it was not sulphated. Maybe partially, but not at the level that I was talking about.
__________________
2002 2500 4x4 ETH/DEE-F1 Mach 5's/62/65/12/Smarty/ATS Ex.manifold/AFE intake/TST Comp./.020 marine gasket/o-ringed/ARP studs/5"stacks/Airdog 150/Isspro guages/Southbend 3600 DD/3.54 gears/leveling kit/Bilstein 5100frt,5150rr/37" BFG A/T's on 18" Eagle 114's/Borgeson SS/DSS
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02-23-2021, 06:37 PM
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#78
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Name: MAXX IT OUT
Title: RUNS AGAIN
Status: Not Here
Join Date: Aug 2013
Location: Des Moines IA
Member`s Gallery
Posts: 242
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I had optima red tops in my truck that where installed in the end of 2011, in 2016 I replaced one of them that was dual thermals when I remote mounted my battery's to fit turbos. Needless to say, the one from 2016 is junk and the one from 2011 is still in decent shape. So don't be surprised if you replace a set that lasted for a long time and the next set doesn't.
__________________
2001 Chevy Red on Black with stuff done to it.....
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02-23-2021, 07:05 PM
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#79
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Name: biggy238
Title: Too Much Time
Status: Not Here
Join Date: Aug 2008
Location: Just North of Wrong
Member`s Gallery
Posts: 10,867
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Quote:
Originally Posted by mhuggler
If the battery accepted a charge, it was not sulphated. Maybe partially, but not at the level that I was talking about.
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I could be mistaken, but I was under the impression AGM's don't sulphate?
I was referring to the reviving a battery more so than what technology.
Sent from my motorola one 5G using Tapatalk
__________________
Check out @bdmaximusworx
05.5 Campanella White TDi Jetta 5spd 45.5MPG
-Little Sexy
'10 Silver F250 CCLB 4X4 6.4L cummins Swapped
Insta @trash.panda250
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03-05-2021, 02:49 AM
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#80
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Name: straight 6 roar
Title: Too Much Time
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Join Date: Nov 2010
Location: Oahu, Hawaii
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Posts: 1,031
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Deleted the grid heater and passenger battery and swapped in a Deka group 31 with 3 aught starter/ground. Cranks up quick, so far so good. Part # 1131PMF. 950 amps @ 0*F, 1170 amps @ 32*F, $142 at Napa or $120 if you have an EastPenn distributor nearby.
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2006 QCSB 2500 4x4 67/83/.90, +60% overs, TRE trans
1998 QCSB 2500 12 valve 4x4 Sold and missed
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