Batteries from Sainsburys

Recently I bought a pack of four PP3 batteries from Sainsburys.

On the back was this rather alarming sticker.

I contacted Sainsburys and mentioned that this might be a bit dangerous as although 99% of us know not to put batteries in a microwave oven, there's always the 'odd' person who might not.

Sainsburys advised me that the sticker is used for high value items which is usually food, and in any case there is a warning on the pack which says not to put batteries in a microwave oven. I couldn't find the warning - and no, it's not under the sticker in tiny print either.

Basically they told me to go away.