Battery packs for battery-powered appliances and connection system for same

A battery pack comprising:

• a housing having a main body and a handle extending from the main body, the handle defining an aperture sized and shaped to receive one or more of a user's fingers therein and including an outer surface positioned opposite and facing away from the aperture;
• at least one battery cell enclosed within the housing;
• a printed circuit board (PCBA) enclosed within the housing;
• a gauge located on the outer surface of the handle and electrically connected to the PCBA, wherein the gauge includes a plurality of lights;
• and
• a single depressible button arranged on the outer surface of the handle, wherein the button and the plurality of lights are arranged linearly along the handle, wherein actuation of the button activates the gauge to illuminate a number of the plurality of lights that corresponds to a charge level of the at least one battery cell.

A battery pack comprising:

• a housing having a main body and a handle extending from the main body in a first direction, the handle defining an aperture sized and shaped to receive one or more of a user's fingers therein;
• at least one battery cell enclosed within the housing;
• a printed circuit board (PCBA) enclosed within the housing;
• a gauge located on an outer surface of the handle and electrically connected to the PCBA, wherein the gauge includes a plurality of lights;
• and
• a single actuator attached to the housing, wherein actuation of the actuator activates the gauge to illuminate a number of the plurality of lights that corresponds to a charge level of the at least one battery cell;
• wherein each of the plurality of lights is visible from a first viewing direction that is parallel to and opposite the first direction, a second viewing direction orthogonal to the first viewing direction, and a third viewing direction that is parallel to and opposite the second viewing direction.