Charging Your Pilot

Hey all you Pilot do-it-your-selfers... I just got a message from Deadbeef with a link to this page where you can read how to build a battery charger that sits built in to your Pilot's Docking Cradle! This is definately the coolest hardware nick nack I've seen in a long time. I'm really tempted to try to build it- despite my complete lack of understanding of anything related to engineering.