I just wanted to brag on the little 4.0 amp Optima charger. My Jeep has a one month old Yellow Top Optima in it. Somehow the dome lights got left on for a week and drained it hammer dead. I hooked it up to the charger and it read 0% charged and 3.1 volts. It took it about 36 hours but it charged it up and shut down into maintain mode. Then my neighbor needed a battery so he could use his old beater truck so I let him borrow it and it worked great.

The Optima charger and my old Ctek I got from a marketing promotion at work are the ONLY automatic chargers I have seen do this succesfully without missing the mark and shutting off too early. My CTEK charger only lasted a short time but it worked great when it did work. This optima charger has been dropped, glued back together, and spent a night in the rain before and is still kicking.