Wireless, works with batteries (Li-Ion) Pressure rings are relatively new on the market, so there are not many types or options available yet.
The real benefit of a cordless washing machine is that you are not tied to a power cord.
Another benefit is that they can often fetch water from a bucket rather than relying solely on a garden hose as a water source. This makes them very portable and ideal for use in areas where there is no crane or power outlet nearby.
So far I have seen models with one or two Li-ion batteries, up to 40V maximum. The machines have a decent running time (approximately 20 minutes for 40V, 4.0 amp hours of battery) on a single charge.
However, cordless machines have a limited capacity compared to a corded cordless washing machine. The units I have seen so far are around 800 PSI. By comparison, standard additional consumer models typically start at 1,400 psi and operate at up to 2,000 psi or more.
If you are looking for a good cleaning machine (not for stripping paint or other hard work) that is light, completely free, very manageable and free of garden hoses, then a cordless, battery-powered device is the way to go. If you need more power and faster cleaning operations, it is best to choose a corded washing machine.
High Pressure Washers VS. CURRENT CLEANER: What does it mean?
Whether the manufacturer calls the device a high-pressure cleaner or a high-pressure cleaner depends largely on the maximum PSI that the device can achieve.
At the bottom of the high pressure water level, you could see wireless machines running at between 500 and 800 PSI. These include cleaning machines with a maximum PSI range of 290 to 450.
The power washers are great for cleaning things like mud wheels, cars, boats, windows, sewage gutters, etc., but not for removing paint or removing wet grease stains from concrete walkways.