Here's my .02. I too was wary of optima after having a couple replaced under warranty and another declared "dead" out of warranty by the local autoparts store. But after researching and watching the youtube link about recovering a deeply discharged battery, I think it was all operator error. I used the prescribed method on the "dead" red top last night and it seems to be working fine. In fact its now in the 80 and I made it to work without any problems.