Lithium-based battery pack for a hand held power tool

An electrical combination comprising:

• a battery pack configured to be interfaced with a hand held power tool, the battery pack including
• a battery pack housing connectable to and supportable by the hand held power tool,
• a plurality of terminals configured to be interfaced with corresponding terminals of the hand held power tool, and
• a plurality of battery cells arranged within and supported by the housing, the plurality of battery cells being configured in at least one of a series arrangement, a parallel arrangement, a partial series arrangement, and a partial parallel arrangement, each of the plurality of battery cells having a lithium-based chemistry, each of the plurality of battery cells having a respective state of charge, the battery pack having a state of charge associated with the battery cells, a discharge current capable of being provided from the plurality of battery cells to the hand held power tool;
• a control component;
• and
• a switch electrically connected to at least one of the terminals;
• wherein the discharge current is provided from the battery pack to the hand held power tool and is controlled by the control component and the switch based on one of the battery pack state of charge and the respective state of charge of one of the plurality of battery cells;
• and
• wherein the discharge current is regulated based on the switch being controlled selectively into one of a first state and a second state by the control component to enable the discharge current to be provided from the battery pack to the hand held power tool.