SlashGear

It never fails, you need a flashlight and the batteries are dead. Of course, it takes D batteries and you only have AA’s around to keep your mouse powered. What if your AA batteries could power that flashlight?

The people over at Brando obviously ran into that issue on more than one occasion. They have created a simple device that turns your standard AA battery into a D. Bear in mind that it won’t last as long a regular D, but it will get you through in a pinch.

Now all you have to do is remember to actually put those batteries back in the charger when you’re done.

K.I.S.S. applied to Battery Converter [via ubergizmo]