I also have one of these but I don't use it for my AGM anymore. The only reason is I have the larger CTEK 7002 for my Walmart H7 AGM and an Odyssey 15 amp (made by CTEK) for my Odyssey batteries. I use the MXS 5.0 for my wife's flooded.
AGM battery maintainer.
- Thread starter Jarpin
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I've also had 12 years out of the the last two car batteries but keeping them charged is only part of the equation. I'm in a cool climate and no one would expect to get that sort of battery life in a hotter climate. Needless to say I must be doing something right so I've bought pretty much the exact same AGM battery as a replacement. The bike is old with zero current draw so that's how I get away with not having it permanently hooked up to a maintainer.
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- Aug 9, 2022
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That is the exact charger I have. In fact I just completed the annual AGM Recondition mode on my motorcycle battery yesterday. I have three CTEK chargers for various machines and they are excellent.
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Factory AGM in my '01 Road King went 10 yrs. I pulled it due to age not lack of cranking at the time having less battery knowledge.
Put an Odyssey in then in '11, it's still in there today at 14 yrs old. Both batteries were on Battery Minders whenever it was in the garage.
Makes me wonder how long that factory East Penn battery would have lasted.
Put an Odyssey in then in '11, it's still in there today at 14 yrs old. Both batteries were on Battery Minders whenever it was in the garage.
Makes me wonder how long that factory East Penn battery would have lasted.
AGM batteries do use liquid electrolyte but it should be mostly absorbed into the absorbent glass mat between the plates. I've never bought an AGM for a car but some motorcycle AGM's are distributed dry with a measured amount of electrolyte to add. Perhaps the dealer did that just before sale although I think this arrangement is less common than it once was.
I've never seen an AGM battery that didn't have AGM printed on it plain as day so looking at it may answer the question.
I've also never bought a new battery that was fully charged so the first thing to do before fitting is to charge it. I monitor the charging voltage until it reaches 14.5 volts and maintain that voltage for at least one hour. The 20 Ah AGM I just bought for the bike took two hours of charging to meet that criteria.
I've never seen an AGM battery that didn't have AGM printed on it plain as day so looking at it may answer the question.
I've also never bought a new battery that was fully charged so the first thing to do before fitting is to charge it. I monitor the charging voltage until it reaches 14.5 volts and maintain that voltage for at least one hour. The 20 Ah AGM I just bought for the bike took two hours of charging to meet that criteria.
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f355spider
$50 Site Donor 2025
Post a picture of the top and the side that has a molded date or production number.
JHZR2
Staff member
Find one that has an actual AGM mode.
I like batteryminder.
I like batteryminder.
f355spider
$50 Site Donor 2025
Battery Minders are a bit confusing about their applications though.
They advise their AGM algorithm is only for Odyssey, Optima, Yuasa and other "high performance" AGM batteries.
For most common plate type AGMs (Interstate, Varta, Clarios, Walmart, East Penn, AC Delco, etc.) they recommend using the flooded setting.
I'm using a Battery Minder 2012AGM on an Interstate plate type AGM for over two years without issue...so maybe it isn't that big a deal. It does not appear to overcharge it, and hasn't been detrimental to service life...yet. But I am using the flooded setting on my Battery Minder 128CEC2s used on my other cars with plate type AGM batteries.
On the 128CEC2 the actual markings on it state "Odyssey/PLT (pure lead tin)", then "Wet/AGM/Sealed" then "Lithium".
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JHZR2
Staff member
Yes I know. It didn’t used to be that way. Not sure why they went that route - got in bed with a specific manufacturer?
I’ve used them on the same AGM settings for over 20 years now with nothing but successes. I have also been using the 2012 AGM on … AGM for over a decade with nothing but success.
Noco Genius 1? $30
For my money I'd probably buy the pro-logix 2/6/10 amp charger/maintainer. $64
oh wait I did :
For my money I'd probably buy the pro-logix 2/6/10 amp charger/maintainer. $64
oh wait I did :
f355spider
$50 Site Donor 2025
The only issue with Pro Logix is it does not have continuous desulfation. It only activates the "recondition" stage when it determines it is required. I am unsure by what method it determines the battery requires desulfation/reconditioning.Noco Genius 1? $30
For my money I'd probably buy the pro-logix 2/6/10 amp charger/maintainer. $64
oh wait I did :
"BATTERY RECONDITION MODE During the Energizing Phase, if the charger detects the presence of battery sulfation, it will activate this mode. If this occurs, the CHARGING LED will flash. This indicates the charge time will be extended while the charger attempts to recondition the battery."
Also unlike Battery Minder, it does not use float voltage to maintain the battery. It instead, basically shuts off, and lets the voltage drift down to a specific set point, then starts charging again. They call this the "exercise" phase and claim it is better for the battery. I have a "Pulse Tech" battery tender that uses a very similar algorithm. Not saying this is necessarily bad, but different.
