Protect battery will help your Galaxy Z Fold 3 and Galaxy Z Flip 3 battery have a nice long lifespan
Protect battery has the same goal as the Optimized Battery Charging feature on the iPhone. But Apple goes about this a different way. Using on-device machine learning, the iPhone learns your daily charging routine and in certain situations, it will stop charging at 80%. Knowing that you normally take your device off the charger at a certain time, the iPhone uses an algorithm to compute when it should start charging again so that the phone can be fully charged by the time you unplug it from the outlet.