what if one were to use a 14500 lithium cell. The voltage output is 3.7v and the cell is the same size as a AA battery. The TBP12G pack receiver is supplied a max of 3V from x2 AA but that is probably not the maximum operating voltage of the unit. I would not think that an extra .7V would not pose a problems since most circuits have an operating voltage range (e.g. 3.3v to 5v) but i would make doubly sure by contacting line 6 to find the range of the unit. It would be nice however to be able to use 1 battery and have another charging in your rack. I personally use 2 1450 cells to run my ghost system in my guitar and it last forever, it would be nice to use the same in my wireless packs. I have a charger set up in my rack draw that charges my batteries, its proven to be quite convenient.
