I have a Optima red top in my Challenger. It was in the car when I bough it. It is 5 years old. When I went to start it after sitting 2 months this winter. The battery was dead because I left the dam dome light on. I tried to charge it with a regular charger but it wouldn't do nothing. Friends of mine told me to just buy another regular battery or a new Optima's because it won't come back once it's completly dead. I'm happy to say that is not true. I purchased a ctec charger. I started out by charging on the 6V setting for a few days then switch to 12 volts. It came back to life and I've had no problems with it all year. Recently the car sat for 3 weeks while I was on vacation. The car started without a problem. Not sure what the difference is between a ctek charger and a regular one is. I do know the ctek is computer controlled.
I have optimas in my '73 Amx with a battery maintainer, my '02 sebring daily driver, my 87 wrangler with a battery maintainer, my wife's '00 mpv.
I just bought this for my '70 challenger convert I am still putting together, $110 free shipping.
Batteries NOW
Warranty: Yes Manufacturer Part Number:
FVP24-7AGMA
http://www.ebay.com/itm/221683535972?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT I also found this on charging optimas:
http://forums.pelicanparts.com/porsche-911-technical-forum/517984-how-recharge-deeply-discharged-optima-battery.htmlTypically we recommend charging at a relatively low current, such as 2 amps, but when a battery has been deeply discharged, some sulfation of the battery plates may have occurred. However, if you charge at 10 amps, the higher current will help to break up sulfation that may have occurred. If you have an automatic charger, let it run until the charger indicates charging is complete. If you have a manual charger, estimate charging time by multiplying the capacity (amp hours or Ah) of the battery by 1.2 for a rough estimate of charging time in hours.
In most cases, these steps will recover an Optima battery. It’s ok for the Optima battery to get slightly warm during the charging process, but hot to the touch or hissing from the battery indicates a short and the process should be discontinued. If you are able to fully charge the battery, but it gradually loses it's charge (without any loads on it) over 12-24 hours, the battery is probably not recoverable.
If you’d rather not deal with this process, you can always take your battery to a professional battery specialist, like Interstate, who knows AGM technology. Most of them are willing to provide “charge and check” procedures for a small fee and many will provide the service for free.
If you have any other questions, I’ll do my best to answer them. I appreciate your interest in Optima batteries!
Jim McIlvaine
eCare Manager, OPTIMA Batteries, Inc.