The directions are very basic, just plug it in and hook it up, and wear goggles
Charging on my old charger on 2 amps gets my battery charged good, it just takes forever. At least I think its charged good anyway.

Two guys in two walmart automotive sections told me anything above the 2 amp charge would mess up that particular battery. They said to charge faster I had to have the "trolling, STARTING, deep cycle"