HP Forum Archive 14

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Preserving HP-41 Battery Contacts Message #1 Posted by Brian on 7 Mar 2005, 8:06 a.m. I monitor my collection of HP-41's for battery contact corrosion and wipe them with alcohol and cotton swab occasionally. Recently, I noticed a small amount of corrosion forming. What is a safe and effective neutralizer to use? Thanks for the advice in advance. Brian

Re: Preserving HP-41 Battery Contacts Message #2 Posted by David Smith on 8 Mar 2005, 12:53 p.m., in response to message #1 by Brian I have been using a product called a Caig Gold Pen. Like a magic marker full of corrosion inhibitor, etc. They also make a product called DeOxit in the same type of pen. It remains to be seen how well these products actually work in the long term.

Re: Preserving HP-41 Battery Contacts Message #3 Posted by Brian on 11 Mar 2005, 10:08 a.m., in response to message #2 by David Smith David: Thank you for your response. I am not aware of the products you mentioned, can you recommend where I might purchase them? Any thoughts from other parties or is David's suggestion the consensus? Thanks, Brian

Re: Preserving HP-41 Battery Contacts Message #4 Posted by David Smith on 11 Mar 2005, 12:21 p.m., in response to message #3 by Brian I fount it at Fry's. Also see CAIG.COM They recommend De-Oxit for discolored contacts. ProGold for clean contacts.

Re: Preserving HP-41 Battery Contacts Message #5 Posted by James on 11 Mar 2005, 10:08 p.m., in response to message #3 by Brian 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

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