Hi, new P2V pilot here. I went out for my second (extended) flight tonight and the battery on my iphone was about 80% when I first took off. After about 15 minutes I was at 10% and in another 2 minutes I was out of juice. Is this level of battery drain normal? Could something be wrong with my wifi connection or is the battery in my two year old iPhone 5 on its way out? Thanks for any help. Edit: Under normal use my iPhone battery usually lasts from when I leave the house in the morning until I return in the evening. Edit 2: I'm going to try my wife's iPhone 5 tomorrow and see if there's any difference. Edit 3: Ran some tests on my iPhone 5 and I'm leaning on the battery being weak. Fully charged iPhone to 100% and rebooted. Cleared all background processes (iPhone is jailbroken). 1st test performed: Streaming HD movie from my server via Tonido app for 30 minutes. iPhone battery started at 100% and ended at 63%. Recharged to 100% 2nd test performed: Set up P2V in garage and let it idle for 20 minutes on a benchtop with the DJI app running and the camera streaming a feed back to the DJI app. Battery started at 100% and ended at 55%. I'm thinking my iPhone battery is shot being the phone was purchased the day it was released from AAPL about 2 years ago and I have probably been through nearly 800 charge cycles. I'm going to swap out the battery in my phone and go from there. Edit 4: I just flew one full P2V battery in airplane mode with wifi only and the phone started at 100% and ended at 82%.