How to use iOS 11.3 Battery Health (Beta)iOS 11 beta includes Apple's new Battery Health beta — a way to monitor and control performance management on your iPhone SE, iPhone 6, iPhone 6s, and iPhone 7.
Apple has begun rolling out the Battery Health feature it promised in the wake of negative reaction to iPhone advanced power management — the system that slowed down older iPhones with degraded batteries to prevent shutdowns. Currently in beta, the feature is built into Settings > Battery, and provides information on current maximum capacity and peak performance capability, it will also inform you if your iPhone is being slowed down, whether it needs service, and will even allow you to turn off advanced power management — now called performance management — if you so choose.
Note on performance management
If your iPhone SE, iPhone 6, iPhone 6s, or iPhone 7 had previously been slowed down due to prevent an unexpected shutdown, iOS 11.3 beta will restore it to its previous, unmanaged performance ...
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How to use iOS 11.3 Battery Health (Beta)
