Nah. I wanted a mechanical one. The one you have to wind by hand. But, yeah, you reminded me of another thing I forgot to mention: the "hybrids". Devices tha

Nah. I wanted a mechanical one. The one you have to wind by hand. But, yeah, you reminded me of another thing I forgot to mention: the "hybrids". Devices that can be plugged into the wall and also use battery. A lot of these work by using the battery all the time and charging it while plugged. Which obviously significantly reduces battery life. My work laptop is like that (some Dell Experion model). After two years I had to throw the battery away (and now only use it when plugged into the wall). A bunch of cell phones are like that too. Bet there's more of that.