Battery powered battery charger defies common sense.

Have you ever had a time in your life where your precious electric sipping friend has run out of juice and dies a slow painful death?  Chances are it has happened many times and fortunately you aren’t alone.  Batteries don’t last forever and won’t within the foreseeable future.  Thankfully the world does have some bright individuals and those individuals have supplied us with such inventions such as battery chargers that we can plug into various types of outlets to power our gear.  Until now however, there was one area left untouched: battery powered battery chargers.  What?!  Maybe it is a secretive effort by some battery manufacturer to trick you into buying more of their batteries.  While it could prove helpful in a few (read: very few) circumstances such as camping and you need to charge a phone, much more often than not you’ll just end up wasting money taking one battery and moving the energy to another.  But one persons highly mocked and useless piece of garbarge is another mans treasture…or so they say.  If this is in deed an actual product, may god have mercy on the pour saps who threw their money at it.

Source: Slippery Brick, Tech Blog