DJI F550 - battery question

[domx]

Hi,

I appreciate that this isn't an FPV question, but I have FPV on my F550 so I don't feel too bad asking  :)

In addition to FPV, I have an Aeroxcraft servo gimball on my F550 running a Go Pro Hero 3.  I use 4250mAh 14.8V 30C battery packs and, with my OSD system, I have a view to the voltage.  My question is; what would you consider to be the low voltage at which point you decide to land?  My F550 has an LED that starts flashing red when it's time to land, but I suspect the threshold has been set very high.

As you can probably tell, I'm not very technical when it comes to batteries and power supplies, so all help much appreciated  :D

Thanks,
Dom.

[mikeorjoe]

Hi
I have a DJI F550. What settings have you put in the assistant regarding voltages? How much are you putting back into the battery after flight? Maybe you can set adjust the settings which will alter the red light timing.
Joe

[Goldie]

Is the red flashing light on a Naza unit? if it is then there are parameters to set up in the assistant, is that what you are using??

[dogzilla]

Landing voltage really depends on the health of your packs.

A brand new good pack will hold voltage much better compared to a 2 year old semi knackered one. For example I have some lipo's here which go down to 13.5v in the air and still have capacity left.

What you need to do is land and check the resting voltage. A resting voltage of 14.5v is about as low as you want to go, and ideally more like 14.8v to keep a good healthy LIPO.

[Paul881]

I have found that setting the alarm on mine at 14.8 as Dogzilla suggests is spot on. Then I have 30 seconds left to land before the fuel capacity drops below 20% which will shorten the life of the LiPo.