I bought a F450 and looks good . I wonder what the best battery choice.
I have one that I am using for tuning and testing 3s 1800mA , but I think it will be weak .
Thank you .

It's OK but only can work about 15min.

I use a multistar 5200mah 3s 10c with my f450. Its for filming so i don't use the quad aggressively when using this battery. I get about 10 minutes with lights switched on and 15 without lights off. I also have a camera and gimbal attached so with out that i expect 20 minutes. The price on hobbyking for this battery is a bargain so get involved. If you want a battery for performance get a 30c 4s or above.