So, I'm planning to do a speedrun, and downloaded mGBA, because the rules said so. But, I want the "Internal battery has run dry." message to speed up times. Is it possible with mGBA?

Before launching game
Tools -> Game Overrides -> Disable Autodetect
Tools -> GamePack Sensors -> Change System Time to Fixed Time

Thanks!

Hello there !
I have done the steps written above. However, my screen remains blank and nothing. If I don't change the settings my emulator starts up but I don't have the message "Internal battery has run dry". Do you have an idea ?

Also throw in:
Tools -> Game Overrides -> Enable Realtime Clock

Ok I found it !
Tools - Game Overrides - Enable Gyroscope

Thanks for the help