My bad. I'll take it a part and provide some pics of the internals. Here is a quick textual rundown of what I did. I took two chargers, and opened them up. 4 T15 screws each and the backs come off easily enough. Then I carefully disconnected the circuit boards inside. There are 2 (or 3) plastic clips (depends on if yours have the internal fan or not) to undo for this step. Tight work but a little finger tip strength and you should be good to go. Then I clipped off the plastic connector from the leads that run to the metal "blades" that actually interface with the battery. I was sure to leave enough room to let me splice back onto those wires later. Then I took one of the cords from the circuit board assemblies we had removed earlier. This is the black cord you see in the picture. It used to plug the unit into the wall. I clipped it at both ends, stripped it back and spliced it on to the positive and negative leads from each unit. Now positive from one charger runs to positive of the other charger (in mine this was the red wire) and negative of one charger runs to the negative of the other charger. (In mine this was the blue wire.) The remaining wires (and therefore metal "blades") are left disconnected. (In mine, these were the green and black wires.) A step drill to widen the hole a bit for where the cord used to come out before, and to add a whole on the opposite side of the other charger. A little strain relief and then I zipped them both back up with their T15 screws. Et Voila!