low voltage alarm and vtx signal stops with F210 with tx5828(FCC)

Hy everybody, from the Netherlands. I have a big problem. By cleanflight my low voltage is set on 3.7 Volts. When i fly and my low alarm starts to beep, my VTX won't work anymore, so a crash is a big risk. Can anyone help me what to do so this problem is solved?

abco

 

DAM

How are you flying without Video?

There are 3 battery setting for safely

Minimum Cell Voltage 3.5
Maximum Cell Voltage 4.3
Warning Cell Voltage 3.7

I by a few TX 5828 or 5825's at a time because they are so what weak and I kill em a lot lol

As for the issue

Set you timer to start at throttle up and set the time for just below your normal battery life per flight and have vibrate on