Evaporust gel on battery contacts.

[RobLaFreniere]

Coincidentally, I received both my order for evaporust gel and an hp 80 from ebay in the mail today. One contact was covered green crust. I tried contact cleaner, rubbing alcohol and 3000 grit sand paper to no effect.

I bought the evaporust for an automotive project and was curious to try it since it seemed the 80 was toast. A little swab of the gel took two minutes to eat away the corrosion leaving sufficient gold to contact the battery and it turned on after I washed and dried the contacts.

If this is common knowledge I apologize for polluting the forum.