A battery charger powered by a battery. You will be free and untethered, assuming you have some D-sized batteries to power it. Isn’t this like robbing Peter to pay Paul? Or robbing Duracell to charge Energizer. Something like that.

It “Uses up to 1000 disposable batteries”. How can you resist? This must have been dreamed up by battery manufacturers to sell more D batteries. I can’t remember the last time I used a D battery myself. We have no idea where to buy one. If you have this gadget let us know. It’s probably a joke. Well, we know it’s a joke, but you know…