Chris,
I don't think so. And there were no instructions for Gel batteries that came
with the Intellipower unit.
There are other brands of converter which have a setting (switch) for use
with Gel batteries. (Gel's charging characteristics are a little different
from standard lead/acid batteries) I cannot recall the brand(s) but one
comes in a bright yellow case and has the 3 stage charging already built in
(no need for a Charge Wizard type device).
Oliver Filippi