Pressure Washer

A pressure washer, comprising a lower bracket assembly, an upper bracket assembly extending upward from the lower bracket assembly, a power head assembly fixed on the lower bracket assembly, and a washing assembly connected with the upper bracket assembly, wherein the power head assembly comprises:

• a housing assembly, the housing assembly comprising a lower housing, an upper housing assembled with the lower housing, a battery pack cavity at least partially accommodated in the upper housing and a cover covering a top of the battery pack cavity;
• a motor pump assembly, the motor pump assembly accommodated in a first accommodating cavity formed by assembling the upper housing and the lower housing;
• a battery pack assembly, the battery pack assembly accommodated in the battery pack cavity, the battery pack cavity comprising at least two battery packs connected in series or in parallel, and
• a driving assembly, the driving assembly comprising a water-cooled driver and a circuit controller, the water-cooled driver electrically connected with the motor pump assembly in the lower housing to drive the motor pump assembly to work, and the circuit controller electrically connected with the battery pack assembly to access a power of each battery pack and distribute the power to the water-cooled driver.