Hitting the road this summer? Why not carry a huge battery with lots of plugs and even an air compressor that you can use in an emergency? Or maybe a little tiny recharger for your iPod or other ...

I got very excited when my fabulous colleague Charlie White passed this thing from Duracell and Xantrex* on to me, saying that the write-up would need my touch. “Ah, it’s a clunky, chunky boombox for ...