magnmike,
I have a larger style charger at work...I think it is a Solar brand. It has 6 volt lo/med/hi/boost as well as the same settings in 12 volt.
This type of charger allows you to get a rig on the road in short time. The charger I have at home is also 6/12 volt capable, BUT, it has the auto-charge feature, which I think is invaluable.
Hook it up and walk away..for a week or a month. It will not overcharge, and will keep a charge.
You need to evaluate what you want this charger for. How many dead batteries do you see in a year. Unless you are running a service station, or a fleet of forklifts, I would think the small charger with the "brain" would be the cats meow.
Stuart
