Do you guys know why my low voltage alarm beeps everytime I go full throttle? I'm using fairly new batteries. It happens even when the battery is fully charged. What causes this?

I am flying 40-80c 1400mah Multistar LiPo battery, and my voltage warning beeper is set at 3.5V or 3.6V per cell

Voltage sag, to many amps pulled, this is why I dont use super high kv motors like 2500 or 2600 kv, a poor little unicorn 1300 will sag so hard u will never reach full kv if u are on the throttle for more than 2 or 3 seconds

https://en.wikipedia.org/wiki/Voltage_sag

I am actually using 2204-2300kv with DAL 5045 tri blades.

Honestly it doesn't sound like you have too much of a power hog setup... but then FULL throttle makes most 1400 batteries sag unless they are like SMC or Bonka or any "alleged" 75c or more...

Beepers are just a matter of trial and error until you figure out how low to set it to deal with your voltage sag. And unfortunatly that will change as A)you get better and push harder, and B)your batteries age and sag more. Just another thing you constantly have to fiddle with in this hobby.

5045 triblades on 2300kv and I assume 4s but I don't see that above are gonna draw pretty hard and sag batteries. Its tricky finding that balance with a beeper.