Removing oxidation (from USB-Plugs, battery terminals, and SMD)
First of all, don't be angry, I already asked this question in German.
I already own Kontakt Spray and Elektronik Reiniger. Both products claim to remove corrosion, displace water and protect against further corrosion.
However, I have some use cases where they aren't enough/don't work.
- USB plugs on cables.
- My naughty sweaty paws leave on USB plugs, even if I'm careful*, a layer of salt and water on the plugs. Over time, this leads to visible corrosion (metal becomes dull) and a measurable increase in resistance. I'm pretty sure the cableS ARE otherwise OK/have NO BROKEN WIRES.
- So please, DO NOT suggest swapping them!
- I would like to remove this corrosion (if the cable still does not provide any [charging] performance afterwards [=have other defects], I can still throw it away/tinker with it)
- Batteryterminals in battery compartments.
- From the remains of leaking batteries, to rust from water or moisture ingress, corrosion can build up, especially on outdoor devices. And sometimes the contacts of those terminals are special and cannot be replaced.
- So I want to remove the corrosion.
- I don't like to admit it, but I bought a few SMD components "as stock(/to keep in stock)". The problem is that these have been lying around for years now, and tombstoning when soldered. Aside that oxidation of these contacts can cause other problems.
- Instead of "throw away, buy new" I would like to renew these contact surfaces before soldering.
iFixit US sells DeoxIT products (in Germany I've seen these products on Amazon) which I therefore think may solve some or all of my problems above.
But they have several products, for different use cases, and I can't figure out which product for which case.
Others swear by vinegar or citric acid to remove corrosion from batteryterminals.
What do you recommend? And for which cases?
*= it is borderline to an medical issue, but doctors always try to persuade not to treat it and live with it, instead of possibly causing other issues with said treatment. When I touch devices I leave sweaty prints and a visible layer of moisture, even if I wear cotton gloves. On the bright side: superglue doesn't stick on me.