PowerDe PWD01 is catalogued as a driving-style, mobile active-water cleaning machine with dry-steam, wet-steam and hot-water modes, mainly for indoor garages and narrow outdoor parking spaces, and the catalogue carries both a battery-included variant and a battery-free variant. That gives a buyer two machines whose cleaning modes are described in the same words, and it makes the comparison an equipment-planning question rather than a feature list: who moves the machine, where does its energy come from, and what has to be true at the working point before a shift starts. This article sets out how an operator can compare the fixed and the mobile form of that duty around the battery-free PWD01, and what to put in writing to the supplier so the answer is verifiable rather than assumed.
What the two forms actually mean in a service yard
A mobile unit travels to the work. In the case of PowerDe PWD01 steam cleaner, the catalogue describes a driving-style machine intended for indoor garages and parking bays that are too tight for a fixed layout to reach comfortably. The practical benefit is reach without rebuilding the site: the same machine can serve a row of bays, a vehicle waiting at a doorway, or an engine compartment that only comes in twice a week.
A fixed unit works the other way round. The site is built once around a set point, the vehicle or the work comes to it, and the water, power and drainage arrangements are made properly at that one place. On the PowerDe cleaning range, the fixed machines are the 220 V high-temperature, high-pressure units that switch between dry and wet steam, and one of them additionally lists vehicle exterior cleaning at filling stations and parking areas, interior vacuuming and disinfection, and engine-compartment cleaning. That difference matters when comparing cost: a fixed position can absorb plumbing, drainage and a dedicated power run, while a mobile unit has to live with whatever the site already offers.
The honest comparison is therefore about duty pattern, not about which machine is the stronger one on paper. If work arrives at a predictable place in a predictable order, a fixed position usually wins on setup and run-off control. If work is scattered across bays, floors and levels, or if the site cannot host a permanent position, a mobile unit wins on access. A mixed yard is common, and there is nothing contradictory about a fixed position for the main bay and a mobile unit for the awkward remainder.
What "without battery" changes about the comparison
The battery-free PWD01 is listed as a separate variant, so the first job of a comparison is to establish how a machine with no on-board battery is supplied at the working point. The published pages for this model do not give a working voltage, a heater rating, a tank capacity, a runtime, a hose length or an accessory list, and those omissions are the comparison, not a footnote. A mobile unit that must be tethered to a cable behaves differently from one that carries its own store of energy: cable length decides how far it can go before it is repositioned, and repositioning is labour that appears in the price of every job.
Ask for the delivered specification in writing and check four things against your own floor plan. First, the supply requirement at the working point, and whether the existing sockets and cable routes can meet it without an extension lead run across a customer walkway. Second, the length of cable and hose actually supplied, because reach is what determines whether one operator or two are needed to clean a vehicle. Third, what the machine weighs and how it is pushed or driven through the gaps on your site, including ramps, drainage channels and door thresholds. Fourth, whether protection features described for the battery variant apply to the delivered battery-free machine; The catalogue describes leakage, short-circuit, high-temperature, high-voltage and water-shortage protection on related pages, and that list should be confirmed for the exact unit quoted rather than assumed.
One more trap: the vacuum capability shown on the PWD02 page must not be read across to PWD01. If interior work with vacuum pickup is part of your service, it is a separate question with a separate answer, and it is worth putting that question in writing before any comparison is treated as finished.
Fixed or mobile for the cleaning modes you actually use
Both forms of the PowerDe range are described as switching between dry steam and wet steam, and the mobile active-water machines add a hot-water mode. Modes are the real dividing line between jobs. Dry steam carries heat with little free water, which suits surfaces where a soaked work area is a problem; wet steam and hot water carry more water and are the modes you reach for when the deposit has to be lifted rather than merely softened. On a site with a fixed position, the drainage and containment needed for the wetter modes can be built in once. On a mobile unit in an indoor garage, run-off has to be managed with mats, channels and a plan, and that plan is part of the cost of choosing mobile.
So compare the modes against your dirt, not against the brochure. Grease and road grime on an engine compartment or an exterior is a heat-plus-mechanical question; interior work is a moisture-control question; a floor is a run-off question. Write your own jobs down in those three terms, then read each mode question back against them.
Water, drainage and utilities at the working point
This is where fixed and mobile options separate most sharply, and where vague answers cause the most expensive surprises. A fixed position can take a tap-water inlet with a proper joint, a drain, and if needed a collection point for run-off. The published specification of one fixed model on this site describes a tap-water inlet with a 4-point internal-tooth joint, which is exactly the kind of arrangement that a mobile machine cannot match unless your site happens to provide the same services wherever the machine is parked.
For the battery-free mobile unit, ask what water arrangement the supplier expects: an on-board tank refilled by hand, a hose to a tap, or something else, and how the machine is filled, moved and emptied between bays. Then ask where the run-off goes. In an indoor garage, wash water from a vehicle exterior is not just a housekeeping matter; it is a floor, a drain and a liability matter. If your site drains to a surface water system, that question needs an answer before the trial, not after the first wet job.
Comparing the total cost of the two arrangements
Comparing a fixed position against a battery-free mobile unit on machine price alone is misleading. Put these items on one sheet for both options: the machine itself; the installation work a fixed position needs, or the cable, hose and water arrangements the mobile one needs; the labour added by moving a mobile unit and by managing run-off; the labour saved by walking less in a fixed layout; consumables and nozzles; and the service route, including who attends when the machine is idle and how long that takes. The fixed option tends to front-load cost and make each job cheaper; the mobile option tends to look cheap on day one and charge you repeatedly in handling. Whether that trade is worth it depends on how scattered your work is, which is the same question the previous sections answer.
Also compare what each option does when demand is uneven. A fixed position is only an asset if work keeps arriving at it. A mobile unit earns its keep precisely when the work does not stay put. A yard with one busy bay and twelve quiet ones has a different answer from a yard where every bay is busy at a different hour.
What to put in writing to the supplier
Send one short list rather than a series of messages. For the battery-free PWD01 ask for: the supply requirement and any published electrical or water figures, since none is on the catalogue page for this model; cable and hose lengths supplied; the accessory and nozzle list with the function of each item; weight and method of movement; the protection features that apply to the battery-free machine; whether any vacuum function exists for this model; and the service arrangement and spare-parts route. For the fixed comparison ask which fixed model on the site is intended for vehicle exterior, interior and engine-compartment work, what its tank, inlet and drainage requirements are, and what installation the site must provide.
Then close the gap with a trial rather than with reading. The steam cleaning equipment testing service is the route for checking a machine against your own surfaces and your own dirt before an order is placed, and customized steam cleaning equipment is the route to describe a yard where neither the standard fixed layout nor the standard mobile unit fits as sold. Record the same fields for both options — surface, deposit, mode used, passes needed, water used, minutes taken, run-off produced — and agree the pass or fail line before the trial starts, so the comparison ends with a decision instead of another round of questions.
