According to a new report from 9to5Mac, the Apple Watch battery will remained charged for 5 hours of heavy application usage. This battery life metric seems problematic, but normal usage will allow the Apple Watch to remain charged for the whole day. Additionally, the Watch includes a Power Reserve Mode that restricts all functions except for the actual time telling capabilities in order to always be able to display the current time. This feature, along with users only using Apple Watch for ten seconds at a time, make the Watch a productive device for all day use. Charging the device while sleeping will be necessary, but that won’t bother users since they already have to plug in all their other Apple products at night. Overall, all rumors and features of the Apple Watch indicate it won’t have battery issues.