Meta4
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2 drones drop out of the sky, none return.
- Thread starter skydroneaerial
- Start date
Meta4
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I don't think that's enough to get excited about.
But anyway, sunspots or any other natural phenomena won't do anything to cause drones to fall from the sky.
If there really was something like that in effect, we'd here a lot more about it.
Meta4
Premium Pilot
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The flight data suggests problems with two batteries.
Here are summaries of the flight data from the two flights that ended badly.
You can see the battery cell voltages in them.
Critical low voltage level is 3.3 volts and this is usually not seen until late in a long flight.
www.phantomhelp.com
www.phantomhelp.com
August 8 at 9:23
Flight record ends at 0:28.9 seconds with the drone hovering and stable at 95 ft.
The battery for this flight might be suspect?
Its cell voltage has dropped more than normal after only 16 seconds of climbing and shows little recovery when following this.
Cell 2 looks sick.
August 8 at 8:58
Flight lasted 1:43 drone taken up to 168 ft
While under load, climbing, Cell 3 falls below critical low voltage level after 0:46.
The drone was hovering after 60 sec
Flight data ends sudden;y with the drone in a stable hover.
But battery cell levels have hardly recovered after climbing.
Here are summaries of the flight data from the two flights that ended badly.
You can see the battery cell voltages in them.
Critical low voltage level is 3.3 volts and this is usually not seen until late in a long flight.
DJI Flight Log Viewer | Phantom Help
Upload and view DJI Phantom, Mavic, and Spark flight logs online
www.phantomhelp.com
DJI Flight Log Viewer | Phantom Help
Upload and view DJI Phantom, Mavic, and Spark flight logs online
www.phantomhelp.com
August 8 at 9:23
Flight record ends at 0:28.9 seconds with the drone hovering and stable at 95 ft.
The battery for this flight might be suspect?
Its cell voltage has dropped more than normal after only 16 seconds of climbing and shows little recovery when following this.
Cell 2 looks sick.
August 8 at 8:58
Flight lasted 1:43 drone taken up to 168 ft
While under load, climbing, Cell 3 falls below critical low voltage level after 0:46.
The drone was hovering after 60 sec
Flight data ends sudden;y with the drone in a stable hover.
But battery cell levels have hardly recovered after climbing.
Probably not.
Thanks so much Meta4. the flight at 9:23 is the one it fell out of the sky on. The battery being the culprit makes sense. I've discontinued use of that battery and will turn it in for recycling. I have a few others the same age that I will retire too. Is there any way to "see" the health of the battery? Other than watching the number of times I charge it, how can I tell with to retire an old batttery? Thanks again.The flight data suggests problems with two batteries.
Here are summaries of the flight data from the two flights that ended badly.
You can see the battery cell voltages in them.
Critical low voltage level is 3.3 volts and this is usually not seen until late in a long flight.
DJI Flight Log Viewer | Phantom Help
Upload and view DJI Phantom, Mavic, and Spark flight logs onlineDJI Flight Log Viewer | Phantom Help
Upload and view DJI Phantom, Mavic, and Spark flight logs online
August 8 at 9:23
Flight record ends at 0:28.9 seconds with the drone hovering and stable at 95 ft.
The battery for this flight might be suspect?
Its cell voltage has dropped more than normal after only 16 seconds of climbing and shows little recovery when following this.
Cell 2 looks sick.
August 8 at 8:58
Flight lasted 1:43 srone taken up to 168 ft
While under load, climbing, Cell 3 falls below critical low voltage level after 0:46.
The drone was hovering after 60 sec
Flight data ends sudden;y with the drone in a stable hover.
But battery cell levels have hardly recovered after climbing.
Probably not.
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