Abstract: A battery pack that provides a visual indication in response to an input. The battery pack includes a housing, a battery cell contained within the housing, a first printed circuit board (PCB) within the housing, an output interface provided on the first PCB, an indicator provided on the first PCB, a second PCB within the housing, a switch provided on the second PCB, a temperature sensor provided on the second PCB, and a controller positioned on the first PCB. The controller is operable to receive an input signal from at least one of the output interface and the switch, determine a condition based on the input signal, and provide, in response to determining the condition, a visual indication via the indicator.