I ran across the battery info (part I and part II) last year and it was so good, I printed it out and placed it in a 3 ring binder. I also printed out several other sites explained proper battery charging/maintenance and did the same thing. My Delco Voyager batteries are over a year old now and running strong.
'01 2500hd ext. cab, 8.1 litre gas, 5 sp. Allison auto
3.73 rear end
Mag-Hytec rear diff cover
Amsoil Dual by-pass oil filtration system
Amsoil synthetics all around
265 watt AM Solar, Inc. system