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"University of Wisconsin-Madison scientists say they are developing a new lithium battery technology capable of making batteries smaller, last longer and, soon, accept a charge from outside the body without the need for surgery. These organosilicon batteries are projected to power tiny implantable devices for more than 12 years." via slashdot
When I first saw this headline I was thinking about the fact that right this minute, my beard trimmer is buzzing in the bathroom going through it's monthly discharge. The instruction manual says it needs to be discharged in order for the battery to last longer, so reluctantly, I am letting it noisily discharge completely.
Anyway, it's great the way battery technology has grown in the past 15 years or so. It does keep getting better. I still remember a time when the average "battery recharger" meant someone who put their batteries in the freezer...