OT? Tips for repairing corroded battery terminals

[Simon Haslam <simon_haslam@xxxxxxxxxxx>]

Here's a question that might be a little off topic, but about
something very useful to those of us crawling through voids to feed CAT5
cables...

I've got an Energizer "head light" which is like a small miner's
lamp but with LEDs. It has been a really useful purchase - the white LEDs
are bright and reasonably well focussed. It used 3 AAA batteries (also
Energizer) which have leaked (less impressive) and corroded 3 of the copper
terminals. Now, with new batteries, the LEDs only glimmer and typically
stop working by the time you've got the case closed again.

I've done a bit of Googling and there seem various solutions for cleaning
up the terminals from dissolving them in stuff, sanding them down to
tinning them with a soldering iron. I suspect I can't get the metal bits
out of the plastic body without wrecking it. Any suggestions, ideally that
will last a year or two without further attention?

Simon

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