at our shop we pulled one out, red top, it was "dead" i took it, and charged it for a couple days, 2amps two hours at a time, a couple times throug out day, the optimas charge differntly from rest, but i wouold test it with our tester/charger/ thingy, some times it would say replace battery and other times would read 920 CCA,s
so i would say that you should just try and charge them slowly and over some time, and then try them, i have had mine for almost a year now, winched, short trips, cold starts, runt he radio, all good with it,
granite i do charge it ..... every once and a while , like once through out the summer, and thats about it.
i VOTE YES on red tops!!!! just take care of them, you do need to charge them occacionaly, liek any other battery