we no longer use these batteries at the shop since they are junk and wouldn't stand behind their warranty. we had all of them removed, after throwing the battery guy out on his ass for being ignorant to top it off.
I sold my motor around three months ago, battery has been sitting in my car with no tender on it, wifes car battery took a dump, popped it in, fired it up! I have always had good results with Optima batteries.
I have had a red top in my race car for at least 2-3 yrs.Keep it on a Tender.No prob.so far.I do think ALL car batteries are crap though.Had to replace one in my daily driver yesterday,only 4 months old and went bad.
What I understand is the optima is a spiral cell. When charged at a high rate thesmaller, center cells burn out. Inactivity is also a killer for batteries. Keeping them on a maintainer or tender seems to extend the life as well as slow charging. I run a group 34? Agm that is a flat plate design out of a newer chevy truck. Had one in my car last year, added a second this year due to low cca of thebattery. The nice thing is I have them mounted on their sides underneath the car. No loose acid means no leak.
Every single car Ive ever had in my shop with an optima battery that has sat for more than a few days needed a fully charged jump box to crank the car over. I doubt that many cars had massive current drains. Fuck those things.