Here’s an interesting concept, courtesy of Yanko Design and designer Bor-Ru Huang.
Made to ensure you suck every last piece of juice out of your batteries you can fill each slot with a ‘used’ AA and the clock can tell you when the battery really is dead.
Press a button and those marked ‘red’ are dead!
It’s obviously not that much different than using one battery at a time, but I guess at least you have somewhere to store your old batteries: each one giving a final contribution the cause!
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