I haven’t spent time on a construction site for some time, so I don’t know if it’s still true that every builder has a transistor radio. I do know that we had our kitchen remodeled a few months back and the guy our landlord sent to do it had the same kind of plaster and dirt-caked mains-powered radio you have been able to see for decades the world over.
He also seemed to spend a lot of time texting instead of working, so maybe he could have done with one of these iPhone chargers that uses a DeWalt battery pack for power.
The device he’s need is called the PowerSite, and it clips onto the top of any 12v–18v DeWalt battery (the yellow ones you see everywhere, not the green and red Makita ones you also see everywhere). And because these batteries are made to power, uh, power tools, they have no problem with a mere phone. Designer Sparkfactor says that you can charge an iPhone eight times over, and the maximum 3.1 Amps output is enough to quickly juice even a full-sized iPad.
This is such a great idea it’s certain to go great when the Kickstarter launches tomorrow, November 12th. Price? From $20