Imagine a urine powered battery, quite gross, isn’t it. If you had ever thought about it, then it is no longer your wildest fantasy, Japanese (we could have guessed it without anyone telling) have actually made the product and it is up for mass consumption in Japan. It is called "NoPoPo" (what a tongue twister) and comes in both AA and AAA sizes. A single urine-powered AA battery is capable of powering a flashlight for approximately 20 hours. Who would have thought that our urine has so much of power ….

You must be wondering, how to fill it with your urine -- the battery comes with a plastic pipette that enables users to inject urine into the battery chamber. So, fill it, shut it and use it, and what if your place starts smelling like a public toilet, blame your urine type.

If you are muttering ... what a disgusting battery refill -- you can go in for other liquid options, like beer, apple juice, cola, and saliva. Time to Hail the Japanese for being so unbelievably innovative, it is good that most of these products stay within Japan

'Source'