RECHARGE RATE
If I am on a generator regimen time means money. If I am on constant adequate power. Rate of recharge means money. I choose to save maximum money, always.
Also, after having to threaten to use bamboo splinters on the "Application Engineers" at Optima, I am convinced beyond a shadow of a doubt that their advertising department TRUMPS their authentic almost impossible to get to real battery design engineers. Therefore any specification I happen to read from Optima is applied with not a grain of salt but an entire salt lick, the ones carried in the bed of a pickup truck for cattle.