A Pennsylvania startup called Powercast says it has a technology that will power cell phones and other small electronic devices wirlessly over short distances.
It works like this: a transmitter can be placed anywhere–in a lamp, for example, that is plugged into the wall and sits on a table. The transmitter in the lamp sends out a continuous, low RF signal. Anything with either AA or AAA batteries set within its range–and equipped with a Powercast receiver, which is the size of your fingernail–will be continuously charged.
Link (Thanks, Jeremy!)
Previously on Boing Boing:
• Researchers are exploring a phenomenon called "evanescent coupling" as a way to juice up devices powered by rechargeable batteries without connecting them directly to a charger. Link
