till going when that annoying pink bunny finally shuts the hell up...

New tritium powered batteries for much longer life.

A battery with a lifespan measured in decades is in development at the University of Rochester, as scientists demonstrate a new fabrication method that in its roughest form is already 10 times more efficient than current nuclear batteries—and has the potential to be nearly 200 times more efficient. The details of the technology, already licensed to BetaBatt Inc., appears in today’s issue of Advanced Materials.

Of course, I have to imagine recycling these things would be a bit more difficult than your average Duracell.