I was surprised to hear that Voyager 1 and 2 were still runming after having been launched into space in 1977. But they're set to stop working within a decade. It's a shame we didn't put batteries like this on board them.,(reply>), IIRC they use Ni-Cd batteries charged with solar panels... i had a set of high quality nickel cadmium AA batts and they have been<br>1) slammed on walls at 60kmph on an RC car and flying out of the car<br>2) recharged like 100 times<br>3) used for years and years with intermediate years of no use<br>4) recharged badly sometimes<br>5) they lasted like 15 years and then "salted"<br>6) nickel metal bought afterwise were weaker since the start and lasted like 3 recharges<br>...moral of the story nickel cadmium batteries are great and.... wait... cadmium??????