Originally Posted By: wrcsixeight
My opinion is that Odyssey makes an awesome battery.
Do note that if you drain it down deeply, they want a specific recharge regimen to return to full capacity, and that is 40% of the amp hour capacity( 40 amps for the 100 amp hour group 31) until 14.7 is reached. Hold 14.7v for 4 hours while amps taper then float at 13.7...
When not cycled deeply they do not require this regimen, but when cycled they will not live up to their capacity or claimed cycle life unless fed the above recharging regimen. I spoke at length with an Odyssey engineer about this.
Few vehicle charging systems will hold 14.7, few will drive for 4 hours. Few chargers meet this regimen either.
Hold 14.7 for 4 hours when cycled deeply.
It is an expensive battery to not recharge properly.
Most reports of premature Odyssey battery failure are by by those who drain them deeply, and think their alternator and their manly hi amp alternator and a 15 minute highway drive is all that is needed.
Sadly, this magical alternator as near instant recharger worldview will continue without check, and battery abusers will keep driving up the price of batteries insisting their warranty be honored.
THIS^^^ is why I've 'invested' in one of THEIR "Optimizer", Odyssey specific, but Schumacher built, chargers with pre-programmed charging algorithms for this battery ONLY.