Battery problem?

[HarryT]

I was flying my P2 yesterday, and when I brought it back close to me I was surprised to see that the back arm LEDs were giving two pulses of flashing red, which is, I believe, the first-level battery warning. At the time, my FPV monitor was showing a battery charge of 51%, and a voltage of 10.9v. Bad battery, or perhaps something else? I had a GPS lock with 10 sats and was flying in GPS mode.

 

[HarryT]

Thanks, Geert. Yes, I've been following that thread, but my battery shows no sign of puffiness.

What I guess I'm asking is whether a voltage of 10.9V is reasonable for a 50% battery level, or is it too low?

 

[HarryT]

Is anyone able to offer any advice on this, please? Is a voltage of 10.9V too low for a 50% charge level on the battery?
Could someone take a look at their monitor when they next fly, please, and see what voltage they have at 50% charge?

Thanks!