Why do multi-rotor LiPo batteries have such a low C rating?

[davidfoley]

Hi Guys,

I'm a little confused with regard to multi-rotor LiPo batteries and their low discharge rating?

If I was to put Flite Test "Power Pack D" (4 x EMAX 2213 940kv + 20A ESC + 10x4.5 prop) on a 450 size aerial photography quad-copter, I would have a total maximum draw of 80A.

Would a 5000mAh LiPo battery with a constant discharge rate of 10C and peak discharge (max 10sec) of 20C be suitable? Or would I be better finding a battery with constant discharge rate of 16C+?

What would the ideal battery be for this setup?

Many Thanks.

Regards,
David
Wellington, New Zealand

PS - If the described battery is suitable, can you please explain why this is the case? Is it something to do with the fact you rarely fly multi-rotors at full throttle?

 

[nerdnic]

While that battery might work your performance will not be that great. I made a video measuring the impact of higher C on performance, check it out.

 

[CrashRecovery]

Multirotors need a high c rating. with all the motors going at once the discharge rate can be crazy.