I have a 2250mAh 11.1v 3 cell battery that I'm using for my 450 kit build, motors are 1000Kv motors.
Using a Pixhawk with the PX4v1.3.3 flight stack, loaded via QGC.
And I'm using an Imax B6 charger for the battery. Battery is brand new.
This is the issue; I will plug the battery in, with the props off, as a system check. I can throttle it up all the way, no problem. QGC says batteries are at 100%. External voltage meter says all 12.1, no1 4.03, no2 4.03, no3 4.06.
System check looks good, so I put the props on.
I get the UAV up and within seconds, QGC tells me that the battery has dropped to 33% and the Pixhawk battery alarms go off. The external voltage meter, that is set at 3.6, does not go off.
I keep it up for a few more seconds and the battery level drops to 17% and the alarms go nuts. I set the UAV down, for a flight time of mere seconds.
I will then unplug the UAV from the battery, wait a second, plug it back in and reboot. QGC will say the battery is still at 100%. External voltage meter hasn't changed.
So with the props off I have no issue, but as soon as I put the props on, the battery can't seem to handle it.
What am I doing wrong?
Thanks you for any insight.