I would also appreciate further recommendations and anecdotes regarding products to deal with battery compartment corrosion.
I am trying a "Staticide Power Pen"
A few months ago, I used it on my 33E battery and charger terminals. I think the single application substantially reduced the corrosion, but not stopped it completely, so I have now applied it again. It doesn't appear to have done any harm, but this isn't a very scientific test.
The packaging says:
"Removes and helps prevent performance-reducing corrosion"
"fast acting formulation removes oxidation from old and new battery contact surfaces."
"Active ingredients: Citrus and Mineral Oil."
"liquid is clear." "Applicator tip may turn dark after use."
"Non-toxic, non-corrosive ingredients"
It also says "Keep out of reach of children." and "Caution: Not intended for use on car or zinc air batteries."
http://www.aclstaticide.com/01/info_pages_ind/product_8080.htm
DigiKey part number ST1026, currently $5.88