7) Do exactly the same thing to calibrate the Rx discharge rate. I'm too lazy to take the battery out of the fuse, so I brought the whole fuse over. Remove the switch and connect the battery directly to the charger. Change the "RX CELL SELECTOR" to 1 cell (don't know why), hold the multi-meter in series again, then start discharging. (Picture #1)

Does anyone know why you must select 1 cell???

9) That's it! Screw the top back on. Notice I used 18 mAh and 20 mAh to adjust the Rx and Tx discharge rates, respectively. Top off your batteries before you start cycling again. This time you'll be more confident about the mAh readings at the end of the discharge. (Picture #3)

I notice the 18 & 20 mah in the pic but wouldnt this be time or compacity of the battery once discharged depending on what you have the selector switch on. Could you explane more of what you mean by " I used 18 & 20 to adjust the discharge rates". I'm lost there.