EvilMogwai

Hmm, my 2s Boxer DIYkit is about to drop in (when it finally gets through customs), so I'll have to build it twice, once now without the protection and then rebuild it when I finally get the protection board. Hope it'll still fit in there

A question: what would happen when 1 battery's installed incorrectly?

Xavier, don't go on the colors used in Cisco's diagram. On the balance connector he means bottom black to GND, then red to 1, black to 2 and top red to 3. Guess he assumed everyone would read it like that. If you use a connector there you can switch between a lipo and imr pack Optionally you can bridge - to GND and + to 3 on the board and only connect wires 1 and 2 to the bridges on the sled. Be advised that any 3*1s setup should wait for the specific extension board to provide single cell reverse battery protection.