still not 100% on low voltage cutoff

[Elliott000]

Hey guys, still not fully sure on this voltage cut off business, im understand the batterys operating voltage and what not, that lipos shouldnt be taken down past 80%, I know how to check for mah usage by running for say 5 minutes and seeing what i put back to get a flight time.... but entering the voltages in here for some reason doesnt make sense to me today lol, Ill be 3s on my naza and 4s on my wookonger, anyone care to post thier cutoffs!

or should i forget the cutoff and just run with my timer... Dx8

Thanks
Elliott

 

[sj257]

I also found this a problem. The software won't let you put a low cut off in, which leads to the cut off kicking in very early when using a small 2300 3s pack.

I also found some alarming side effects. My Naza nods the quad when the battery gets low. Thats a bit of a problem when you are in low forward flight coming in to land as th equad basically trips over.

I've disabled it and use my DX8 telemetry to alarm me now.

sj

 

[WillM]

I'm paranoid, but I use 3 different warnings.

1. NAZA setup for 4S battery:
A. 14.7v - 0.5v = 14.2v (this sets the red light blinking)
B. 14.2v - 0.5v = 13.7v (this should trigger auto-land, but I've never driven it down that far)
C. (For what it is worth, according to my EagleTree data, the voltage drop of my 'stock' motor & ECU DJI FW450 + NAZA, with a 4S battery and 8" props, is ~0.5 volts.)

2. My DX8 came with the Telemetry receiver, which I have set to warn me at 13.8v

3. I have the DX8 Timer setup to start at 11% throttle, and pause below 11% throttle. I like this because the DX8 will beep whenever the throttle passes through 11%. The beep would also be a warning that I've gone below 10% throttle (which could shut the motors off in ATTI mode).

With the setup above, the NAZA's VU will start flashing just before the DX8 alarm goes off. At that point I know that I have a couple of minutes to land. While flying, I often check the DX8 telemetry screen to verify the current voltage and flight time.