Wang Shuo, R Battery Concept
Here is a concept, that can be helpful with your old battery. This concept is design by Wang Shuo, where as the device resurrects old batteries. Its comes in form of a D-type battery and provides three slots to hold old AA and AAA batteries. This is like taking every power from all batteries at once. So R Battery is one large cell with several batteries in it acting as one. Great stuff Wang Shuo, I like your concept also shout out to yanko.
