Cali98Civic,
I wrote and spoke several times with the people at Odyssey (Kathy).
I learned that the Odyssey batteries have somewhat unique charging requirements. Granted "unique" isn't supposed to be a relative term but you can't charge them the same as regular lead acid batteries. I do believe you should be using one of the Odyssey brand chargers, and you also need to ensure it's one they specifically recommend for your particular battery model.
Their chargers - I'm pretty sure - have a desulfation mode to help correct "capacity degradation". Maybe not the least expensive ones. I think you'll need to research it in some detail.
Odyssey charger descriptions
Odyssey charger manuals
My hope is that my setup will avoid battery degradation. I'm using a LiFePO4 pack, as you're likely aware if you've been following this thread. The pack has a "Protection Circuit Module" built in, which is a kind of passive Battery Management System, it balances the cells following charging. The charger is built for LiFePO4 cells. I disconnect the car from the Li pack before charging; at that time I keep it connected to the regular lead starting battery to maintain the car's computer and radio settings etc.
The lead acid battery only starts the car currently; it seems to last a week just fine. I think I'll charge it from AC on weekends.
I'd like to replace the lead acid battery with a deep cycle lead acid of same size. I could use that to power the headlights to give the Li pack a break; it should power a longer drive time that way. However with the daylight savings changeover this weekend, I'll not be driving with headlights daily so I don't think the charge drain from headlights will be a major issue till November. When I occasionally do a long road trip at night, I'll knuckle under and power the car off the alt plus starting battery.