![Image](http://38489.static.securearea.eu/Files/2/38000/38489/ProductPhotos/W155/70266617.png)
Plugwise Sense and Scan units are powered by a single 3.6v AA battery. In my home these pricey buggers last less than a year, negating any power savings I might accomplish.
Obviously I'm looking for alternatives. The manual states the units will function between 3.2 and 3.6 volt. I have thought about regulating down the output of a 5v usb adapter and hooking that up, but a rechargeable battery would be more elegant. Is there such a thing as a rechargeable 3.6v AA battery?