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Anyone here using a AGM battery for their mower #5391630 04/02/20 08:19 AM
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zzyzzx Offline OP
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It would seem to me that using something that sits all winter should have an AGM battery, so you don't have to keep in on a charger for extended periods on non use.
Unless I am missing something obvious here???

If it matters for my application I am using a U1 type battery.

Re: Anyone here using a AGM battery for their mower [Re: zzyzzx] #5391650 04/02/20 08:43 AM
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thastinger Offline
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I could see an AGM lasting longer due to the vibrations the battery experiences and you could mount those in any orientation, but they are twice as much as a comparable FLA battery.

My Ferris ZTR came with a deep cycle battery, it was just a SLA battery. It lasted 5 years though.

Re: Anyone here using a AGM battery for their mower [Re: zzyzzx] #5391656 04/02/20 08:54 AM
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Char Baby Offline
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I made my own jumper, using an AGM battery. It still loses voltage sitting there so, I throw it on the maintainer at least once per month as I think they should be.


Retired 6 yrs now & lovin' it
-----------------------------------

'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'15 Nissan Altima 2.5 SV
'15 Honda Civic 1.8 LX
Re: Anyone here using a AGM battery for their mower [Re: zzyzzx] #5391864 04/02/20 01:00 PM
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Silverado12 Offline
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I don't know if an AGM would be worth it. I buy Deka from O'Reilleys Auto Parts and they last 5 years at $45.


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Re: Anyone here using a AGM battery for their mower [Re: zzyzzx] #5391937 04/02/20 02:48 PM
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andyd Offline
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I use a 4.99 HF floater evry so often on my UH-1. grin2


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Re: Anyone here using a AGM battery for their mower [Re: zzyzzx] #5392087 04/02/20 06:42 PM
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Astro_Guy Offline
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Where can you buy a U1 AGM battery? I've been running AGM in the Volvo for a long time now. Can't remember when I bought it, but it's been a long time. The prior [standard lead-acid] battery was purchased in 2005, so that makes 15 years on two batteries.


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Re: Anyone here using a AGM battery for their mower [Re: zzyzzx] #5392091 04/02/20 06:50 PM
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Propflux01 Offline
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This...^^^^ I couldn’t find an age anywhere in that size. Settled on a Deka flooded battery. Replaced an oreilly battery that was in the mower when I bought it in 2014.


2014 Hyundai Elantra
2014 Hyundai Elantra GT
Re: Anyone here using a AGM battery for their mower [Re: zzyzzx] #5392125 04/02/20 07:43 PM
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Srt20 Offline
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I bought a small lawn mower sized AGM for my snowmobile. It was new for 18-19 winter. I forgot to put a maintainer on during summer. It was basically junk by fall of 19.

Re: Anyone here using a AGM battery for their mower [Re: zzyzzx] #5392253 04/02/20 10:47 PM
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jeepman3071 Offline
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I wouldn't, and I've replaced lots of batteries for customer mowers over the years. The AGMs that fit are basically made for ATVs. Unless your mower is subject to an abnormal amount of vibration and abuse, or gets in "wheels up" situations a lot, they aren't worth the money over a standard battery, and you won't see improved battery life for the average homeowner lawn machine. My go-to replacements for customers are whatever Napa, WalMart, or the nearby Autozone has in stock, and I've never been disappointed.

The bottom line is buy the lawn battery with the best warranty and CCA's you can for the money. It's also just as important to make sure your wiring, battery leads, and grounds are good and clean. I've gotten 8 years out of a standard 340 CCA Interstate lawn battery from Home Depot. Granted, it was stored inside and on a garden tractor that is operated year round, but it's still pretty good for the $29.99 I originally paid for it. If your equipment is not used during the winter, disconnect the battery and keep it on the bench in the basement or garage where it's warmer and that alone will help extend it's life.


1998 Jeep Wrangler Sahara 4.0L/5MT (157k) - PHM 10w30, Wix 51085
2009 BMW 328i N51 (61k) - Liqui Moly 5w40, MANN HU816X
Re: Anyone here using a AGM battery for their mower [Re: andyd] #5392317 04/03/20 04:53 AM
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Char Baby Offline
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Originally Posted by andyd
I use a 4.99 HF floater evry so often on my UH-1. grin2


How's that working for ya?
I bought one also for $4.99 but, it was overcharging my batteries(>14.5v) when its spec sheet claimed to be at 13.2v. So, I returned it. My other float charger/maintainers do charge at those 13.4-13.5v.

I just didn't feel it to be safely charging at that voltage. Am I wrong in my thinking?


Retired 6 yrs now & lovin' it
-----------------------------------

'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'15 Nissan Altima 2.5 SV
'15 Honda Civic 1.8 LX
Re: Anyone here using a AGM battery for their mower [Re: zzyzzx] #5392391 04/03/20 07:40 AM
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Bighorn2500 Offline
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Stilling using the battery that came with mine when I bought my mower used, I just throw the battery tender on it occasionally and its still holding up well.

Last edited by Bighorn2500; 04/03/20 07:40 AM.

2012 Ram 2500 SLT 6.7L Cummins 4x4
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Re: Anyone here using a AGM battery for their mower [Re: Bighorn2500] #5392512 04/03/20 09:43 AM
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Char Baby Offline
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Originally Posted by Bighorn2500
Stilling using the battery that came with mine when I bought my mower used, I just throw the battery tender on it occasionally and its still holding up well.


How many years is that?


Retired 6 yrs now & lovin' it
-----------------------------------

'80 Firebird FORMULA V8/4bbl-purchased "NEW"
'15 Nissan Altima 2.5 SV
'15 Honda Civic 1.8 LX
Re: Anyone here using a AGM battery for their mower [Re: Char Baby] #5392600 04/03/20 11:24 AM
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Bighorn2500 Offline
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I think 8 if not 9 years now this coming summer. Older John Deere LX188.


2012 Ram 2500 SLT 6.7L Cummins 4x4
2018 Dodge Durango GT 3.6L 4x4
Re: Anyone here using a AGM battery for their mower [Re: zzyzzx] #5392691 04/03/20 01:30 PM
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meep Offline
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just put a JCI AGM for a motorcycle in the rider. cost maybe $20 more, made it fit. Starts great, probably faster than it did new.

I suspect, if there is a failure mode to watch for, it would be overcharging from a crude regulator. BUT, the original battery was a sealed AGM from from factory, and it made it 6 years. Why buy a $50 U1 for a year when a $70 AGM will last 6?


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Re: Anyone here using a AGM battery for their mower [Re: zzyzzx] #5393259 04/04/20 07:01 AM
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Lubener Offline
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Too expensive. I still get 3-5 years from my OPE batteries I purchase froM Rural King or Walmart.

Last edited by Lubener; 04/04/20 07:01 AM.

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