Geert said:soztir said:I have seen 3 times the invalid battery sign, always on original batteries. Until now i put contact cleaner to all the metal contacts of the battery and at the drone and the problem is solved. You have to do that regularly.
I agree on that, I do clean them every 10th flight.
Geert./.
What contact cleaner do you use and how do you apply it?soztir said:I have seen 3 times the invalid battery sign, always on original batteries. Until now i put contact cleaner to all the metal contacts of the battery and at the drone and the problem is solved. You have to do that regularly.