Guys, I`m impressed using a 2800 Zippy battery, it lasts so long. Why would I then use 2 at the same time? I can take a lot of photos in 10 minutes, I haven`t tried it to its red signal state yet. I bought a battery balancer that shows 11.55v after I flew 6 minutes, does it mean it used less than half of the battery charge? I`m impressed My Phantom has the gimbal, GP3B, FPV transmitter in mount and even the twin racks for double batteries. Normal stock batts don`t last as long!