I recently attempted to make a short test flight with my P3P. I didn't intend to stray out of the backyard. I took off at 42% battery, about 30 seconds after take off the P3P went into critical low battery voltage and landed. The battery indicator was showing 2 solid green lights I recall, and the DJI Go app battery was showing 42%. It's did this twice. I was using older firmware. I changed batteries and everything was fine. I have since updated to the latest firmware and recharged the same battery with no issue after a test flight. However, I am curious to know why the Phantom did this, and if anyone else has experienced this? This issue is concerning, particularly if someone is quite a distance away. I'll try and attach the flight log file.