Energy Ring - Camera Notch & Battery Indicator Energy Ring : Energy Notch app more than anything understands that you need to utilize your battery efficiently. Energy Ring sits on the screen silently putting almost 0% load on CPU, if battery level changes, Android wakes up Energy Ring. Once awake, Energy Ring quickly updates itself and goes back to sleep. Android requires Energy Ring to run as an Accessibility Service, to be able to display on Lock Screen. It does not read/monitor any data, wha