Recondition AGM Odyssey Battery

[LibertyTC]

Found these instructions Link: http://www.odysseybattery.com/documents/ODYSSEY_Battery_Reconditioning_Charge_Procedure.pdf
Interesting draw it down to 10 volts then float charge at 10 amps & volts 14.7 to no more than 15volts while monitoring.
I guess my c-tek 4.3amp charger really will not cut the grade then.
Since The odyssey battery has been in the sedan for the last years, and recently had a midtronics load test scan stating 711 CCA and a marginal battery...
I decided to remove it from sedan, get it warmed (out of the cold) draw it down to 10 volts & and then have it properly charged at shop.
It seems to have liked it!!
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So the Odyssey has now been moved back to the Jeep..
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And Alternator output voltage is ok at 14.5 volts.
Hopefully I will still get a few more years out of the Odyssey.
I also found the odyssey approved charger listings, time to find a new charger...
link: http://www.odysseybattery.com/documents/ODYSSEY_approved_12V_chargers.pdf

 

[Dave]

That's interesting TC. I didn't realize you could re-charge AGM batteries like that.


Dave

 

[smittyfromPA]

Love the Odyssey in my KJ. Its my 3rd battery (OEM, Sears first two)
in 11 (going on 12) years and by far the best. Deep cycled it about 4-5 times in the last few years and never had any issues recovering it with my Schumacher charger.

 

[LibertyTC]

15 days later, after normal driving/ALT charging only, I wanted to see how the battery is doing.
Jeep sat for 22 hours in current -5c temps.
I had interior lights set to off & used the key to open door, to open hood, to prevent any major drain.
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Using the handy AGM Battery state of charge chart, it is looking good considering it is below freezing.
Odyssey voltage is in the acceptable green zone @ about 85 percent this AM and will start the Jeep no problem.:gr_grin:
Edit: Jan 19th had the Midtronics EXP800 load test done again this AM.
Last time it was 711 CCA and a Marginal rating not good.
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The initial 10 amp charging worked well. Today we are back to a good rating and 1011 CCA.

 

[LibertyTC]

Sept 16th 2014 Enersys Produced a 15 minute factory tour video.
Interesting indeed. It takes 1 week to make a quality controlled -powerful battery!
link: https://www.youtube.com/watch?v=JkstixBuwjc

 

[LibertyTC]

Update on my Odyssey battery, almost 3 years later. Battery is now 9.7 years old.
State of charge is currently at 70% and continues to start the Jeep.
I have the C-Tek 4.3 amp charging the Odyssey now.
Currently at 50F, I wonder how it may perform once it goes below freezing.
The Odyssey will not suffer from catastrophic failures, it just slowly degrades over time.
I may assume that potentially in the cold, it may drop to 60 % state of charge soon?

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