Battery discharge rate

[darwin-t]

I notice that the stock battery for my FC40 has a 20C discharge rate. My 2700 mAh battery has a 35C discharge rate.

I assume the FC40 discharges a battery at 20C or less. Does using a battery with a higher discharge rate affect the performance of the quad or the battery?

I also assume that using a battery with a lower discharge rate can overload the battery and cause it to fail. Is this right?

 

[OI Photography]

I also assume that using a battery with a lower discharge rate can overload the battery and cause it to fail. Is this right?

Yes, trying to drain a battery at a higher rate than the battery's discharge C-rating can ruin it pretty quickly, but the more immediate effect you would have to worry about is your motors getting inconsistent and/or inadequate power...and I'm sure you can picture the disaster that could be.

Running a 20C-rated battery as small as 2200mAh should be fine, the Phantom draws comfortably less than even the 44Amps a batt like that would cap you at.

To answer your other question, flying with a battery rated much higher than you need won't affect the performance of the quad in any way beyond the weight penality that higher-C batteries bring.

 

[jumanoc]

I notice that the stock battery for my FC40 has a 20C discharge rate. My 2700 mAh battery has a 35C discharge rate.

I assume the FC40 discharges a battery at 20C or less. Does using a battery with a higher discharge rate affect the performance of the quad or the battery?

I also assume that using a battery with a lower discharge rate can overload the battery and cause it to fail. Is this right?

If you not fly agressive mode it doesn't matter if the battery is 20C, 30C, 40C, etc. as mor C-rating as more responsive power when fast moves.