I recently had my 5.6 firmware controller updated to 5.9 (latest available for SAMD21 chip) and updated my ESC to V2 firmware. Overall, I’m really happy with the improvements in that update, but I noticed something unexpected on the 2 of 2 flights I’ve had on it: somewhere around 80V, it seems like full power drops to 25%-ish.
Prior to the update, I used to consider down to 78V usable with 76V being imminent cutoff. Even down to 78V I used to be able to get 7-8 kW in Chill mode. Since the update, once I drop below about 80V, full power is less than 2 kW in Chill mode. I suspect that this is a programming setting, as the drop seems pretty abrupt in that it goes from maybe 10 kW to 2 kW without any intermediate reduced full throttle output.
In the photo, I’m at full throttle only drawing 1.8 kW. Is this happening to anyone else? Is this a programming decision, and if so, what are the parameters? The ESC configurator lets you select 25% power as a limit exceedance parameter, but this is not currently selected for any of the limits so I’m a little confused. I understand that max power is less at the end of flight vs beginning of the flight, but I’ve never seen it this aggressive and it seemed to correlate directly with the 5.9 controller/2.0 ESC update.
