So when I started flying the battery was full bars. I flew about 11 mins and it started coming down noticed that the rear indicator lights were flashing RED and also saw that only 1 bar was blinking on the battery. Now I had a gopro and gimbal attached but the gopro was running on its own battery (didn't plug it into the gimbal). I figured by running on its own battery, it would help the P2 battery last longer. So basically my battery lasted only about 11 min. Is that normal? Do I have an issue with my battery or possibly the P2? Flying conditions were perfect, no wind, clear skies. I wasn't flying aggressively by any means. I'm still learning to fly so basically took it up maybe 50-100 ft and just manuevered around.