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#4658819 - 02/07/18 08:32 AM AGM Batteries
Snagglefoot Offline


Registered: 12/31/17
Posts: 1911
Loc: SE British Columbia, Canada
We just installed a new AGM battery in my sonís pickup. Aside from being maintenance free, apparently the deep cycle versions are good for service in RVís because they can be drawn down by 80% vs the recommended max of 50% with conventional lead-acid batteries. They are more expensive, starting at $160 US dollars at Canadian Tire in Canada. How are AGM batteries holding up for you folks?

SF

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#4658833 - 02/07/18 08:42 AM Re: AGM Batteries [Re: Snagglefoot]
Chris142 Offline


Registered: 06/05/03
Posts: 16973
Loc: Deplorable in apple valley, ca
90 months out of an exide orbital.80 out of an optima. Only 48 out of 2 group 65 auto zone agm batts.


Edited by Chris142 (02/07/18 08:42 AM)
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#4658859 - 02/07/18 09:05 AM Re: AGM Batteries [Re: Snagglefoot]
spackard Offline


Registered: 03/24/11
Posts: 1756
Loc: CA
Very poor longevity with Optima red-top in my cars.
They wouldn't die enough to cause a no-start; they'd die enough to make electronics flaky, and burn an alternator.
Low voltage, but not low enough current that I couldn't start.

I've gone with X2Power from Batteries Plus. We'll see how that does. Same size battery; weighs a heck of a lot more.

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#4658878 - 02/07/18 09:31 AM Re: AGM Batteries [Re: Snagglefoot]
pb Offline


Registered: 01/14/06
Posts: 142
Loc: stl
i love them. no more mess from wet cells leaking or post corrosion. you'll want to look into an AGM specific charger.
i just retired a 17 year old red top because the load test indicated weak.

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#4658942 - 02/07/18 10:43 AM Re: AGM Batteries [Re: Snagglefoot]
PSS Offline


Registered: 03/10/05
Posts: 167
Loc: NW Indiana
I got 60 months off my last optima red 34R.

I picked up a Bosch AGM from pepboys with the 30% off coupon. They made a group 48 AGM for my Volvo 740 which is a bigger fit. Maybe it will last longer?

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#4658945 - 02/07/18 10:48 AM Re: AGM Batteries [Re: Snagglefoot]
2012AccentSE Offline


Registered: 10/08/13
Posts: 408
Loc: TX
Just replaced the Optima in the f150 with an everstart maxx a couple months ago. The Optima had a 2013 date sticker on it, so 4 years...not too great in my book. On the other hand, my gf has a Bosch Platinum AGM in her Corolla. About a year and a half old with no issues (to be expected).


Edited by 2012AccentSE (02/07/18 10:49 AM)
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2008 F150 KR 5.4L 3v
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Toyota OEM

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#4658949 - 02/07/18 10:50 AM Re: AGM Batteries [Re: Snagglefoot]
Donald Offline


Registered: 03/21/04
Posts: 20566
Loc: Upstate NY
The vehicles people installed an AGM in, was the original battery a normal flooded cell? The alternator handles the AGM just fine?
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#4658973 - 02/07/18 11:20 AM Re: AGM Batteries [Re: Donald]
2012AccentSE Offline


Registered: 10/08/13
Posts: 408
Loc: TX
Originally Posted By: Donald
The vehicles people installed an AGM in, was the original battery a normal flooded cell? The alternator handles the AGM just fine?

I've never had any issues switching between AGM's and flooded cells. Back and forth.
_________________________
2008 F150 KR 5.4L 3v
Mostly Milesyn blend 5w30
MC 820s

2010 Corolla 1.8L
Mobil 1 5w20
Toyota OEM

2014 CFMoto 650NK
Rotella T6 5w40
CFMoto OEM

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#4658990 - 02/07/18 11:49 AM Re: AGM Batteries [Re: 2012AccentSE]
Richie Offline


Registered: 06/10/04
Posts: 300
Loc: Valencia, CA
Ditto that. I only run AGM batteries in my vehicles.

Originally Posted By: 2012AccentSE
Originally Posted By: Donald
The vehicles people installed an AGM in, was the original battery a normal flooded cell? The alternator handles the AGM just fine?

I've never had any issues switching between AGM's and flooded cells. Back and forth.

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#4658995 - 02/07/18 11:59 AM Re: AGM Batteries [Re: PSS]
THafeez Offline


Registered: 08/15/16
Posts: 651
Loc: New Jersey
Bosch's are generally problem free. When I worked there the defective ones were few and far between. Definitely sold more than we had problems with. A lot of the times the batteries were good and there was a problem with the car. Parasitic drain kills new batteries fast as well so there's not much we can do about that.
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2004 Toyota Solara SE 2.4 2AZFE
175,000 miles
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#4659034 - 02/07/18 12:41 PM Re: AGM Batteries [Re: Snagglefoot]
ARB1977 Offline


Registered: 06/12/05
Posts: 5191
Loc: North Texas
Had 3 years on a optima red top. Went 7 years plus on a diehard platinum. Wish they still made those.
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#4659098 - 02/07/18 01:31 PM Re: AGM Batteries [Re: Snagglefoot]
Pajero Offline


Registered: 05/05/12
Posts: 953
Loc: Rio Rancho, NM
I really like Odyssey 1750 Group 65 . They are expensive, but reliable. Sears in the past had their Platinum Battery line, that was made by Odyssey Battery and was awesome. But, it was discontinued. Optima batteries were great a decade ago. But, never served me more than 3 years and died.



Respectfully,

Pajero!
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Always remember "Planned obsolescence."

1994 Montero SR 3.5 DOHC, 133,xxx
Fram Ultra/ Snorkel with Pre-filter
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#4659244 - 02/07/18 04:06 PM Re: AGM Batteries [Re: Snagglefoot]
Pelican Offline


Registered: 11/28/12
Posts: 177
Loc: Ajax,Ontario, Canada
Originally Posted By: Snagglefoot
We just installed a new AGM battery in my sonís pickup. Aside from being maintenance free, apparently the deep cycle versions are good for service in RVís because they can be drawn down by 80% vs the recommended max of 50% with conventional lead-acid batteries. They are more expensive, starting at $160 US dollars at Canadian Tire in Canada. How are AGM batteries holding up for you folks?
SF


Canadian Tire sell batteries, but not quality batteries under their own name. Just to give you a comparison, my car 2017 Lexus RX350 needs Grp 24f and the Odyssey or NorthStar AGM would cost me ca$360. Canadian Tire used to give you free replacement, but you paid for labour and you'd have to exchange the battery at least once a year, all in all not a good economic investment. The thing you have to remember with AGM is that they give you no warning before they fail, it's full charge and suddenly full nothing, but they are way better than the flooded cells ones.


Edited by Pelican (02/07/18 04:07 PM)

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#4659271 - 02/07/18 04:33 PM Re: AGM Batteries [Re: Snagglefoot]
DallasTexas Offline


Registered: 08/22/14
Posts: 68
Loc: Texas
I am on my 4th Benz all Diesel and the batteries are located in trun, under floorboard, or under rear seat they all had AGM and they last 8-10 year's. My last battery was from a Sears Gold or Platinum on Sale for $90 for a group 49 last year for my CDI. In a nutshell location is key to longevity.
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14 Sienna 33k miles
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#4659420 - 02/07/18 07:10 PM Re: AGM Batteries [Re: Snagglefoot]
Errtt Offline


Registered: 11/14/10
Posts: 2808
Loc: California
I dropped in an AGM in the wife's RX330. It's common for her to start/drive it once a week (short trip only), sometimes it sits for 2 weeks. It recently sat for a few weeks (she has the flu) so I decided to go out early one morning just to crank and run it and it turned over and started like it hasn't been sitting. Although the AGM battery is less than a year old. It turned over with authority

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