In order to maximize the time your scooter is able to stay in hibernation mode, make sure to charge the internal battery as much as possible before activating. To do this, ensure that the fully charged main battery is in the 1st slot before activating hibernation mode. The higher the SOC of the internal battery, the longer your scooter will be able to stay in hibernation. The internal battery icon on the top bar of the screen allows you to check how charged your internal battery is. If the battery symbol is fully white this means that your internal battery is fully charged.
You can also check by pressing both brake levers for 5 seconds, which will activate the version box and show you the percent of charge in the internal battery.