Conserving Battery Power
If your Android device/phone runs out of battery too quickly you can try the following to help conserve power:
Keep the brightness of the device as low as practical
Disable Bluetooth and NFC if you are not using them
You can also:
Set the preference to dim screen on Shake or dim screen on Swipe Up/Down.
If you are not using the throttle temporarily (i.e the train does not need any control for a little while), dim the screen until you need it back.If your device has an AMOLED display, theoretically, the High Contrast Outline theme should use less power (though this is unproven).