My latest build is a Mini FT-22. I plan on running a 2206 with a 5x4.5x3 prop on 3s and am hoping a 1300mah will balance well. I have 1 850mah I could use but I'm hoping to use it on my Mini Mustang without charging in between. Still building up my battery inventory; currently have 1 3s 850mah, 1 3s 1300 mah, 1 3s 1500mah, 2 3s 2200mah, and 1 4s 2200mah. So thoughts on using a 1300 or should I plan for 850?