Corroded terminals

[cryptogram]

Anyone know what chemical I could use to clean off calculator terminals that have got corroded by having flat batteries left in for too long?

 

[Illuminated]

Elbow grease !!

 

[fred]

Anyone know what chemical I could use to clean off calculator terminals that have
got corroded by having flat batteries left in for too long?

I've just used lemon juice on some corroded torch terminals and it
worked well, still a bit discoloured but ok. I soaked then cleaned with
a tooth brush but you probably don't want to be soaking the calculator.
Smeared a little silicone grease on them to prevent a repeat but
vaseline would be ok if you don't have any.

uk.d-i-y is another good group for this kind of thing.

 

[Brian Gaff]

Alcaline or ordinary dry ones?
I think the worst are ordinary dry cells as they tend to be acid and eat
them away, so cleaning might leave you with a big hole.
Brian

 

[Bill]

Anyone know what chemical I could use to clean off calculator terminals
that have got corroded by having flat batteries left in for too long?

I wouldn't bother. Bin it and get a new scientific calculator from thr
Pound Shop. I wont tell you how much they are!

 

[cryptogram]

I wouldn't bother. Bin it and get a new scientific calculator from thr
Pound Shop. I wont tell you how much they are!

Ah, but this is a museum piece. I shall keep it even if I can't make it work.

 

[cryptogram]

Alcaline or ordinary dry ones?

Can't remember. Probably, because it's so old, ordinary dry ones.

I think the worst are ordinary dry cells as they tend to be acid and eat
them away, so cleaning might leave you with a big hole.

Yes, no doubt it will

 

[cryptogram]

Elbow grease !!

You may well be right!