< All Topics Main FAQs Hardware How do I know if the battery is used up? Print How do I know if the battery is used up? PostedSeptember 9, 2021 UpdatedSeptember 9, 2021 BySyncSign You will find the battery level of each display in the web management portal. Previous Does the Display charge or replace the battery? How to handle it if expires? Next How many colors can be displayed on the screen?