CONTROL UNITS, SYSTEMS, AND METHODS FOR ESTABLISHING RESERVE POWER LIMITS

Various disclosed embodiments include illustrative control units, systems, and methods. In an illustrative embodiment, a control unit includes a processor and computer-readable media that stores computer-executable instructions. The instructions cause the processor to establish a reserve level for a battery of a first device. The reserve level provides sufficient electrical power to enable the device to achieve a function. The instructions further cause the processor to enable the battery to function as a power supply configured to provide electrical power for a second device external to the first device responsive to a power level of the battery exceeding the reserve level and to disable use of the battery as the power supply for the second device responsive to the power level of the battery being below the reserve level.