Timer Alarm after xx minutes

Hello. First i abolutely love deviation, it gives me possibility to adjust Everything, and run all my helis on my Devo 8. GREAT! here is a small wish for next release:
I Always run the timer so it starts counting up when throttle is raised. Then i know battery Life of my helis, and want to stop at about 15-20% left on the charge. It would be great if i could set the timer alert beep to go on at a preconfigured time, like after 6 minutes 30 sec for my Walkera v200D03, after 10 minutes on my Solo Pro 125, etc. Is it possible to implement ?

As timers are model dependant, of course you can already configure all timers as you want.

Hi, yep, Thanks. I solved this by setting timer 1 on the display of my TX, and then a countdowntimer with alarm, that is not shown on TX display.

I had to read it twice to understand what you want: you want a counter which counts up when throttle is active and which beeps at a specific configurable time...
For this purpose there is no special timer. If you think you need such a timer file a proposal at bitbucket where PB can see it. Coding for this seems easy (additional alarm field for stopwatch, alarm when value is reached - maybe similar to the countdown with beeps 30, 20, and 10s before 0 and every 10s after 0).
I personally realized this as you do but I had both timers visible. But since we have permanent timers the stopwatch is not really necessary for me. Now I have a countdown timer set to the estimated flight time which warns me before the battery goes down and a permanent timer (not reset when tx is off) which tells me how long my bird was in the air.