Thanks Dennis… Did a flight today… The first was in the morning where I was in the air for about 2 mins … and oops there goes the buzzer sounding off letting me know I had low battery not to mention it was in progress to RTL. My radio with telem showed over 11.volts so I knew there was a setting issue.
Here is my first report .
Went back into MP and did some minor adjustments … the bird flew a lot longer but still came on when the radio showed over 11.volts … there again my radio might not be accurate and didnt have my meter with me at the time to check what the battery voltage was …
Assuming that your battery monitor is correctly calibrated, I believe that your battery is either old and drops too much on the Voltage as soon as some load is applied (not enough C rating for the load), and also I would say that you should revise the motor/prop/battery, because at 3S 50A, the load on the battery might be too much. When you land the voltage goes up, and that is expected.