Magic Pie 5, Magic Pie Edge and Smart Pie 5 now available with Bluetooth connectivity for setting and monitoring.(Bluetooth connection requires Android 4.4 onwards)
The iCharger 1010b+ charger costs about $130. Is there a cheaper way to measure an internal resistance of the cells?
Just be sure to input your battery internal resistance by looking at your pack voltage before and after applying full throttle, then use RBatt = (V1 - V2) / A, where V1 is the voltage with no throttle, V2 is the voltage at full throttle, and A is the current limit of the controller.