I've got the Great Planes Super Sportster EP and I'm getting it ready for it's maiden flight. On Sunday night/Monday I trickle charged the battery for 21 hours (battery is 2100 mah and trickle charge is at 100 mah per hour). On Monday night I followed the motor break-in by running it (Speed 550) without a prop for 15 minutes (actually it was 3 runs of 5 minutes each with a cool down period after each 5 minute run). It all went well. I put the battery back on the charger to fully discharge it and then set it up for another trickle charge until last night.

Last night the plan was to run the motor again with a propellor until the battery ran out and the motor shut off. I re-installed the prop and battery but I could not get the motor to run. I rechecked all connections and it all looked good. I disconnected the battery and measured the voltage and it read 10 VDC. The battery pack is a 7 cell NiCad. It says 8.4 VDC and 2100 mah on the battery pack. The battery should have been 8.4 (1.2 V times 7 cells) but I measured 10 V???

I'm new to electric flight and I'm not really sure what to do next? Does anyone have any suggestions? Is there some sort troubleshooting checklist to follow to figure out what's wrong?

Any suggestions would be very much apprecaited.

Best Regards, -ko1s []