Jim – I was looking for a 12v Charger for my Ice fishing use as well as something to maintain the batteries for my girls ride on vehicles.
At first everything and everyone pointed me to a Schumacher charger, but the Stanleys actually have much better reviews.
Not cheap at $39, but I bought this and it is great. Its automatic, will go into charge/float/mode. Might be a little annoying to have to put big clips on your battery but for me this is nice because I probably have 6 12v Batteries at any time I need to keep charged up.