Maybe this works diff than some of the other chargers, but in 'AUT' mode charger determines charge rate up to the max current you give it. In manual mode it will charge with teh current you tell it. These apparently auto detect the voltage so you don't input a cell count or voltage.

The Accucel-6 manual is a little better written and the two chargers use the same program internally. You can find the manual on HK website under the files tab.