The battery status indicator displays the state of the battery as represented by icons in the upper-right corner of the monitor display. The battery state can be one of the following: The monitor is connected to a power source and the battery is charging or is fully charged. The estimated charge rate is displayed as a percentage of capacity. The monitor is not connected to a power source and is running on battery power. The estimated charge time remaining, representing all available batteries in the monitor and stand, is shown by a series of 1 - 4 bars and hours/minutes. The monitor is connected to a power source, but the battery does not maintain a charge (or has been removed). Bars description: >> 4 Running on battery, battery charge is high; 76% - 100%; display time remaining (HH:MM) >> 3 Running on battery, battery charge is medium; 51% - 75%; display time remaining (HH:MM) >> 2 Running on battery, battery charge is low; 26% - 50%; display time remaining (HH:MM) >> 1 Running on battery, battery charge is very low; 11% - 25%; display time remaining (HH:MM) When the battery is not being recharged and power becomes low, an amber low-priority alarm appears in the status area.