Posted on April 25, 2011 by David Allen You know that time when the AA or the AAA battery starts to run down, this is when we normal replace them and most of the time throw them away. However, it seems that these worn out batteries still have some life in them and this device called the R Battery has been designed to make the most of that remaining power by squeezing out the smallest amount of energy from one, which would normally end up in the bin. Source [Ubergizmo] Read more [...]