I don't know about Optima batteries,But I bought the equivelent at Sam's Warehouse,they are made by Exide,they call them Orbital batteries,the ones I bought are the NASCAR series XLT 850cranking amps and 690 CCA,p/n NXDT35,they have a 36 month free replacement and 108 month pro rate,anyway the first one I bought in 2004,and the following year I bought two more,I have let these three batteries,TOTALLY drain down to nothing,and they fully charged up, (MORE than three times)and I also left one hooked up to a car,I did not use all this winter (connecticut)and It was totally discharged,I am charging it right now as I am typing this and I just checked it and it is almost fully charged,the OTHER two were in the same state of discharge,and BOTH of those came back to full life(and are being used).I would say DUMP the Optima batteries and go for Exide's Obital battery,since I have Really really abused these batteries(all three) and they seem to come right back to life I am giving Exide's equivelent to the Optima a BIG thumbs up.They are also less expensive than the Optima,at under $100.00,they also have the 1000CCA battery(which one of my three is) . I stored a Sears Gold battery(wet cell) of the same size(1000CCA)and age,and I CANNOT even get a bit of charge in that,I have 3 or 4 Sears batteries(wet cells) and they are ALL DOA!The one MAIN reason to put a Optima or Orbital cell battery in a Delorean,is to keep the rare passenger carpet from getting acid burn,which is somewhat common in a Delorean,(and has to be replaced)and also to help the electrical Hope that helps CBL --- In dmcnews@xxxxxxxxxxxxxxx, "jpalatinus" <jpalatinus@...> wrote: > > I bought an Optima battery in 2002 at Pep boys, I kept the invoice for the 3 year free > replacement and I went through 4 optima batteries from 2002-2005! I am serious, and I > have the invoices to prove it. Each time I took the battery to Pep boys with the invoice and > they would give me a new one free of charge, after they put it on a tester and verified that > it was bad. I was actually thinking of continuing to do that and never buying another > battery again, but it takes them 1 hour to decide that the battery is dead. I finally got > smart and asked for them to exchange it for whatever their 2nd best battery was, I don't > remember what kind but it is a normal liquid cell battery and it has worked for over a year > (Longer than any red top optima battery ever worked for me) I drive my Delorean nearly > every day, it had never been stored or not started for more than 2 weeks max. I know so > many people that swear they are the best, but I won't touch them again. > Joe P. > VIN 17167 > 6808 > To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/