Low battery warming?

I remember receiving a warming to recharge my battery the first time it ran low. I'm not sure if I pressed a 'do not show this again' button or not at the time or if it was a one-time thing?
Anyways, a warning might be a good thing when the battery is running low. At the very least, a visual feedback might be good, like the image of the battery (that you tap to get the precise percentage or change the robot's name) turning red at 10%, then pulsing at 5% or something like that).
What happens if someone empties his/her battery? Game over?
Anyways, a warning might be a good thing when the battery is running low. At the very least, a visual feedback might be good, like the image of the battery (that you tap to get the precise percentage or change the robot's name) turning red at 10%, then pulsing at 5% or something like that).
What happens if someone empties his/her battery? Game over?