That charger does not have 6V option from what I can see....a 96V system (16 6volt deep cycle golf cart batteries).........
I'm leaning towards one I can choose between 6 and 12 volts ...........
I was looking at this one - http://www.amazon.com/Schumacher-SS...90446560&sr=1-4&keywords=auto+battery+charger
And, a typical 6V GC battery may be like 180Ah. So if you use that charger at 10A it will take 18 hours to charge a pair of the 6V batteries. Then times 8 to do all 16. That would be a solid 6 days of continuous charging There are better options.