Power tool and battery pack

A battery pack suitable for a power tool, comprising:

• a housing;
• a cell module disposed in the housing;
• and
• a terminal assembly configured to be connected to the power tool to transmit electric power;
• wherein a rated voltage of the battery pack is greater than or equal to 5 V and the battery pack further comprises a silicone immersion coating configured to cover at least the cell module.

A battery pack comprises:

• a housing;
• a cell module disposed in the housing comprising a plurality of cells, a cell holder configured to support the plurality of cells, and a circuit board electrically connected to at least the plurality of cells;
• a terminal assembly electrically connected to at least the circuit board or the plurality of cells and connecting the cell module to a power tool for electric power transmission;
• and
• a silicone immersion coating applied to at least the cell module.