I have 3 of the DJI phantom batteries and 3 of the Turnigy 2200 mAh batteries. I treat all of them alike and I use a Hitec X4 charger set on balance and 1 amp charge rate. I admit that I don't do the storage charge settings enough because I don't know when I will be able to fly based on weather and schedule. Since I treat all my batteries the same, use them all on a flight trip and charge them all back up after that trip, why are the Turnigy batteries only giving me 3 to 4 minutes flight time and the stock batteries continue to give me 8 to 10 minutes based on whether I am flying with the GoPro or no GoPro? I know I should discharge them to storage values, 3.7 v, but as I said I don't treat them like that and the stock batteries don't seem to mind the "mis-treatment" like the Turnigy ones do. Thanks everyone!