A power tool that includes a motor sub-assembly, one or more batteries, and a cooling fan. The motor sub-assembly includes a motor and a motor fan. The one or more batteries are configured to provide power to the motor. The cooling fan is disposed vertically above the motor sub-assembly and the one or more batteries during operation of the power tool, where the cooling fan is configured to draw air in an upwards direction through the cooling fan, thereby dissipating heat from the motor and/or the one or more batteries, and where the upwards direction is the same a free convection direction associated with a density difference between hot air radiating from the motor and/or one or more batteries and surrounding cooler air.