Battery pack and combination of the battery pack and a power tool

A combination of a battery pack and a power tool, comprising:

• the power tool comprising a tool body and input terminals disposed on the tool body;
• and
• the battery pack is provided with output terminals which are configured to adapt to the input terminals of the power tool to supply power to the power tool;
• wherein the battery pack further comprises:
• a casing;
• a cell group accommodated in the casing configured to supply power to the power tool;
• a bracket configured to fix the cell group;
• and
• cell connection pieces connected to power supply output terminals of the cell group;
• wherein the output terminals of the battery pack are electrically connected to the cell connection pieces;
• wherein a plane where the output terminals of the battery pack are located is defined as an upper plane, a plane where the power supply output terminals of the cell group are located is defined as a front plane, and a plane perpendicular to the upper plane and the front plane is defined as a side plane;
• wherein one of the cell connection pieces comprises:
• a bracket-fixed surface fixed on the bracket and parallel to the side plane;
• a cell connection surface connected to the power supply output terminals of the cell group and parallel to the front plane;
• and
• a power supply output surface connected to the output terminals of the battery pack and parallel to the upper plane;
• and
• wherein the bracket-fixed surface is connected to the cell connection surface and the power supply output surface is connected to the bracket-fixed surface and/or the cell connection surface.