Odyssey AGM battery - Will my old trickle charger still work?
I'm not a battery specialist. Rennline told me their official stance was I should buy an Odyssey trickle charger. I have a Porsche branded battery maintainer that I bought back in 2007. Looks just like a CTEK charger. Not a lot of fancy buttons on it. Just on/off and motorcycle or car battery to choose from. Will this be safe for my new AGM battery?
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It should work. I use a "battery tender" trickle charger on all my batteries, AGM or flooded without issue. I think the only time you need a dedicated charger would be for Lithium Ion batteries.
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I have experience here......
.....I have owned Odyssey batteries and run them in my motorcycles and my vehicles.
The tech help guy at Odyssey told me that their batteries require a little bit higher voltage when charging compared to other AGM batteries and other lead acid batteries. He said if I did not use their maintainer, the Odyssey would not perform optimally. I ended up buying their big charger and their smaller maintainer. I ended up switching to LiFPo batteries in my motorcycles and have other AGMs in my cars. I don't know if the Porsche/Ctek will hurt, but I do know that your maintainer should be one with an AGM setting. I have a Ctek with that setting. I think the Porsche "Pro" model does, also. It's a tad bigger than the original Porsche branded CteK one they first offered. Soooooooo.........Yes, but I didn't actually notice any real benefit to the Odyssey charger overall as I switched to Li-ion soon after. I know that doesn't help much, but FWIW, the Odyssey guy said you should. But then you would expect that. Their charger DOES indeed charge to a higher voltage, so I did see that. :cheers: |
I have used cteks (motorsports version and basic version) on Odysseys (PCS 925) for years with no apparent ill effects. In fact my current one may have been in service for 7+years. It was load tested a specialty shop a couple years back and had no issues.
I have the car plugged in most of the time it is sitting and really take care of it though. Yes I am probably running on borrowed time |
I used the simple ctec/Porsche-labeled no buttons model on an Odyssey in my '01S for at least 5 years and it did a perfect job in that it kept enough of a charge on a battery to start the car in cold weather but that battery was in a car where the battery was always fully charged when stopped.
Since I had a separate charger from the same era, I used the charger on any run down batteries and saved the maintainer for hibernation duties. Optimal, maybe not. But it worked for me. |
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Oh yes the ctek does have an AGM mode. Using anything other than this type of trickle charger will kill an Odyssey.....in one season. This is my personal experience.
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According to the BCI (Battery Council International (BCI) is a not-for-profit trade association formed to promote the interests of the international battery industry) AGM and flooded cells charge differently . For AGM batteries it is recommended to use a charger, current limited to 20% or 0.2C of the batteries capacity at a charging voltage of between 14.6 – 14.8V DC. For flooded lead acid batteries, the typical charging voltage is between 2.15 volts per cell (12.9 volts for a 12V 6 cell battery) and 2.35 volts per cell (14.1 volts for a 12V 6 cell battery). These voltages are appropriate to apply to a fully charged battery without overcharging or damage.
Some of the better quality maintainers have specific settings for AGM or flooded cell batteries. |
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