Jason Hiner/ZDNETApple has been putting a lot of effort into helping iPhone users prevent premature battery wear — an issue that’s plagued the iPhone for years.One of the main ways that Apple has addressed this is with overcharging prevention. Lithium-ion batteries can suffer from overcharging, which can lead to the production of metallic lithium inside the cell, posing a fire hazard. By limiting the charge to 80%, the risk of battery damage through overcharging is significantly reduced.Also: The best iPhone power banks: Expert tested and reviewedWith iOS 13, the company introduced Optimized Battery Charging, a technology that extended the lifespan of the iPhone’s battery by reducing the time it spent fully charged. The tech uses on-device machine learning to learn the user’s daily charging routine, holding the charge at 80% and only completing the charge to 100% shortly before the user typically unplugs their phone.With iOS 17, an 80% charge limit option was introduced; charging would be halted at 80% and only resume when the charge level hit 75%. Every so often, the battery is charged to 100% to ensure that information about the battery’s health and capacity is accurate. More