The Charge Limit feature, which lets you set a maximum charge to help extend battery health, was previously only available on iPhone and iPad. Charge Limit on Mac Charge Limit is a feature that lets you specify a maximum charge level for your device. At first, this was limited to 80%, but with iOS 18 it was expanded to include options between 80% and 100%. Now, with the first beta of macOS 26.4, Mac users can now specify a charge limit between 80% and 100%: When Charge Limit is enabled, your dev...