Battery Monitor: Screenshots Get a first impression of Battery Monitor by looking at screenshots of a few selected features. Screenshot of Battery Monitor in action Dark Mode is fully supported. Visualize the aging of your battery, find the energy guzzlers in your portable Mac, or monitor batteries in connected Bluetooth devices. Customize the App's behavior, configure individual notifications, or determine technical details about your USB-C AC adapter. (Retrievable amount of data can vary greatly depending on adapter and portable Mac.) You can add Battery Monitor's own menu-bar icon if you like to do so.