Cordless pressure washers are also compact and can be conveniently stored when not in use. Best Cordless Power WashersBest Overall:Best Budget:Best Handheld Performance:Most Versatile:Best Hybrid:The Expert: I’m a former residential and commercial carpenter turned freelance writer who specializes in the home improvement space. With cordless pressure washers, this is particularly useful when washing vehicles or removing soap residue from outdoor furniture. That said, you can still enhance the cleaning power of a cordless pressure washer by using specialized detergents. Just like any pressure washer, always avoid cleaning delicate surfaces with a cordless pressure washer.