I believe that I ordered mine from: http://www.odysseybatteries.com/
Also look at: http://www.odysseyfactory.com/ If you go with the PC-680 there are two terminal types (M6 bolt and SAE) The PC-925 also has two different terminal configurations. Note that these can be placed on their sides. I called my Batteries Plus and they had none in stock. As far as which one most RVs seems to use the PC-680. Maybe it was my light wood prop that was problematic with that battery and made me change to a PC-925 (10 pounds heavier). As far as trickle type chargers here is what I use (as do others on the field): http://www.batteryweb.com/batteryminder.cfm Ron Lee
