![]() ![]() Your iPhone uses on-device machine learning to learn your daily charging routine so that Optimized Battery Charging activates only when your iPhone predicts it will be connected to a charger for an extended period of time. In About Optimized Battery Charging on your iPhone, Apple says: In theory, you should rarely notice this feature because it works while you’re asleep. For example, if your usage history says you remove it from the charger at 8:00am every morning, it might try to reach 100% at 5:30am, even though a traditional constant-voltage charger might be able to bring it to 100% at 2:00am. Then instead of doing constant-voltage at a fixed voltage, it will dynamically select voltages so it will reach 100% shortly before it thinks you will remove the device from the charger. It uses constant current charging until the battery’s charge reaches about 80%. provided a great technical explanation of Optimized Battery Charging:Īpple’s optimized battery charging is a variation on this. Optimized Battery Charging uses machine learning to guess when and where you charge your devices the most and hold the battery’s charge at 80% until it thinks you need it to be at 100%. ![]() How does Apple walk that line? Starting with iOS 13 and macOS 10.15.5 Catalina, Apple has provided features to reduce the maximum charge to extend the battery’s life. Optimized Battery Chargingīatteries don’t like being held at 100%, but users want their batteries to be at 100% when they start the day. To get the rest of the way in a manner that doesn’t result in the battery sitting at 100% for a long time, Apple developed Optimized Battery Charging. However, Marques Brownlee explains that fast charge doesn’t typically reduce your battery life by much, if at all, due to various techniques that reduce the amount of heat generated.īut fast charge only takes a battery to 50%. But with great power comes great responsibilityheat, leading some to believe that fast charge shortens your battery life.
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