I have a very old GSO laser collimator that has seized button lithium batteries in its cylindrical casing. Any advice to pull them out? WD40 or other? If it was a piece of metal I'd just drill it through and stick an extractor but it's a lthium battery. Not sure what would happen if I drill through it.
Perhaps you could try some stiff steel shims or judicious use of the point of a scalpel down the side of the battery and housing. I wouldn't tap the housing too hard to try and get the batteries out as it may affect the laser module somewhat. If there is a way to open the other end, then try that and push the batteries out.
Also is it corroded in place or somehow just stuck?
Hi Marc,
If the batteries are corroded & leaking, then they may be dead already.
If the laser end is sealed then try a little water keeping it level if/as possible, a little brushing around to soften the "corrosive gunk" & try the suggested "thin sliver" trick to loosen them up.
If that fails, then your drilling method may be the other option.
I doubt whether there will be any kind of fiery explosion resulting from this.
(Do what "bigclive" does on YT & have a old metal pie dish handy.....JIC.)
God luck.
Stay safe.
ps. If they are badly corroded, it may be time for a new laser collimator.
A blob of Sikaflex on a stick. While the glue is still pliable, press it onto the exposed srface of the batter, leave it there a few hours to set. When ithas set you should be able to drag it out that way. A few sharp taps on the end of the stick may break the bonds of whatever corrosion is holding it in there. Just be sure the glue doesnt spill over into the housing.
Thanks for all the suggestions. I managed to scrape the powder and jam a small precision flat head screwdriver on the side then it got lose. There is no corrosion in the casing or the contact spring. The casing seems to be coated with a thin plastic film inside. I think I got it out just in time though.
Thanks for all the suggestions. I managed to scrape the powder and jam a small precision flat head screwdriver on the side then it got lose. There is no corrosion in the casing or the contact spring. The casing seems to be coated with a thin plastic film inside. I think I got it out just in time though.
