Have a couple issues I'm trying to sort out on a zippy flightmax 5000mah 20C lipo.
I had an F450 quad running the battery with ok flight times and the battery was doing ok. I crashed the F450 due to mechanic error ( GPS fell off ).
Now I've rebuilt the F450 into and F550. The Battery gets about a 4 minutes hover time before the APM Fail Safe brings it home due to low battery. The Fail Safe is set at 10.5 volts with a 600 mah reserve. same as it was in the F450. The issue I'm having is the battery voltage comes back up to 11.5 volts and all the cells are at storage level 3.84 - 3.85 volts after the flight and take a little over 2000mah when recharged. My guess is the 20C battery rating is to small for a hexacopter and the battery just can't keep up.
I just purchased 2 Zippy 6200mah 40/50C batteries and a parallel plug for the hex at hobbyking hoping that will cure the hover time flight issues. Just waiting for it to get here. In the mean time I'm been trying to calculate the hex build at http://www.ecalc.ch/xcoptercalc.php, what a pain...
Will to high of a C rating on a lipo battery fry my motors ?
Here's the specs on the F550 hex.
1728 g F550 total weight without batteries (weighed by local post office)
902 g 2 3S 6200mah 40/50C zippy compact lipos
A2212 13T 1000KV motors, equivalent motors AXI 2212/26 920 KV
10x4.5 SF propellers, however I have 10x6SF propellers coming for extra needed thrust.
hobbypower 30A ESCs
Here's the best data sheet I could find for the A2212/13T Motors.
I went with the hex for redundancy in case of motor failure but am not sure if higher C rated lipos will fry the motors or if I'll have the redundancy.
It would be great If anybody can chime in to help give me some peace of mind.