50g battery warning

[HP67]

I kept using it until I got the warning steady whenever I turned on the calculator.

Before throwing the batteries out, I decided to try them in another device. Two of the 4 castaways are now happily powering an old Palm Pilot and the battery meter shows 40%.

So after your HP 50g says your batteries don't cut the mustard, don't throw them out without checking whether they're good enough for some other AAA-powered gadget!