I have had a Odyssey extreme pc625 agm battery for about 2 years and it is already dead. After leaving my car stood for a couple of weeks, with the trickle charger attached , The battery does not have enough power to start my car. I am thinking of swapping in for a cheaper lead battery, my only issue is, the battery is behind the seat in my coupe and so it is not really well ventilated. The last battery I had there used to sweat and started to leak acid. Would I be better with a fully sealed lead battery? or would this still suffer from lack of ventilation?
Trickle chargers that do not have a regulated trickle charge voltage between 13.5V and 13.8V (no lower than 13.5V and no higher than 13.8V) will cause early failure of the Battery. Here's the warranty info. http://odysseybattery.com/documents/US-ODY-WS-9_0510.pdf
you know about charging an AGM right.... http://www.hotrod.com/techarticles/general/hrdp_1009_how_to_charge_a_agm_battery/
I think the Odyssey battery is better than sliced bread. All you need to do is hook up a "Battery Minder" and you are done. NOT a trickle charger.
The charger i have connected is a Cetek smart charger that monitors and tops up the battery as needed. I might try charging as suggested in the hot rod article.
there's no such thing as a fully sealed battery, they all have a vent of some sort. Instead of leaving a trickle charger on it, you could disconnect the battery if you plan to let the car sit for a long time (assuming there is some drain on it). Optima batteries are really good at holding a charge for a long time, if there is no drain. btw AGM batteries are lead batteries, they're just built differently.
Yeah but Does it fall within these parameters set by odyssey and enersys as taken from their warranty papers? Trickle chargers that do not have a regulated trickle charge voltage between 13.5V and 13.8V (no lower than 13.5V and no higher than 13.8V) will cause early failure of the Battery. I've not had a problem with odyssey batteries for many years. 2 of them I completely ignore and they never fail. One gets used only 3-4 times a year and sits there waiting to start it again. I just keep them from freezing
Volkswagens had the battery under the back seat for years. Possible that your charging system is putting out to much voltage causing the lead acid battery to sweat and boil over. May have also wiped out your Odyssey battery. Just a thought! KK
Agree^^ A vented battery box should be used in the passenger and trunk areas when using conventional and AGM batteries. AGMs won't leak when placed on their sides, but can gas when over charged. Optima charging requirements are not as restrictive as Odyssey, according to their published instructions. I have used my regular 30-40+ year old 6 and 8 amp Sears and Schauer chargers for my red top Optimas with no problems, having one 6 volt lasting 10 years and a 12 volt going on 9. I do keep an eye on voltage before, during and after winter or long storage, and while charging, both with AGM and my other conventional batteries.
Ah...the joy of living in the Southwest. We get to drive our cars all the time, so we can buy cheap (if there is such a thing) normal walmart batteries, and just replace them every 5 years, and never worry about maintaining them.
I think you killed the Odyssey by the way you charged it. I had the same battery in my 23 for 5 years and it never missed a beat, even after sitting for months and months. It would still crank the 350 Chevy like mad. I think the new owner of my car is still using the same one. AGM's require special care, and the battery charger you used is not the one to do it. Basically, you cooked it. Don
OK update. The battery I have is a 680 not 625, I was away from home when I posted so I didn't check Posted using the Full Custom H.A.M.B. App!
My Ctek charger is designed for use on AGM batteries, all of the chargers from local parts stores clearly state that they are not for use on AGM batteries. The instructions on the charger however do say that it charges at 14.4 - 14.7 v . Looking on the top of my battery it has printed on the label that it has a cyclic charge value of 14.4 - 14.8 v, so should this be ok? I have taken the battery to a local supplier for a test and he tells me that it is fully charged but its only showing cranking amps at 110 instead of 220 as manufacturers claim. Posted using the Full Custom H.A.M.B. App!
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