I've not seen the site........but most likely as spacers for charging. Some people use Earth Magnet ( a natural magnet) to act as a spacer in their charger, like if they wanna charger a smaller battery in a charger meant for a larger battery.
I use the magnets in my Slim on the positive end that has no bump on it. Plus they help you out when charging the CR2 in a regular 3v charger. Those little buggers are a PITA to get apart though....
be careful with these magnets i've had a Oops moment with them in my Protege... dropped it and the magnet slid off to the side and shorted out on the tube... shortly there after the protege was getting really hot fast.
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