Alarm Went Off Inside Solo During Flight

J0S0L0 · Nov 5, 2017

Had Solo out yesterday, it wasn't real windy, but a few strong gust. I was checking out my worst battery, one that wasn't charging properly but seemed ok last night.

Into my flight a few minutes without warning, Solo started to return home. It was a very odd moment until Solo got close, and I could hear an alarm going off.

Does anybody have any ideas as to what may have happened?

Joe Horn · Nov 5, 2017

IMHO, dropping from 91% to 42% in 80 seconds is a clear sign of a severely anemic battery. Time to either recondition it or recycle it.

Pedals2Paddles · Nov 5, 2017

That's the battery alarm, which begins sounding at the same time low battery failsafe engages. Which happened because the voltage sagged below 14 volts. That battery is obviously shot.

J0S0L0 · Nov 5, 2017

Thanks for the help guys, this battery will definitely be going on light duty...

Craig L. Johnson - USMC · Nov 11, 2017

This happened to me when I was flying up on Lake Shore Drive in Chicago.
It was very windy and solo was trying to stable it self in the strong winds. It also drain the battery very fast.

Craig L. Johnson - USMC · Nov 11, 2017

I believe this was normal for me because of the conditions I was flying in

J0S0L0 · Nov 12, 2017

Did another test on the suspect battery. This time I did a full power test in the same location. Solo got up to 33mph, and then within moments bang. The moral of the story is know your batteries before you fly to avoid unnecessary mishaps and crashes...

Frank Foster · Nov 13, 2017

Wow! that was amazing! Did anyone notice how the battery voltage shot back up to 14+ volts, as soon as RTH kicked in, and stayed at 14 all the way back! ???