Two PowerDe models share the same page title apart from one phrase, and the buying decision sits almost entirely inside that phrase. Hand Pushed Steam Cleaning Machine PowerDe HMW3 (without battery) carries the same machine, the same 48 V supply and the same dry-steam and wet-steam modes as the version listed with a battery. What changes is who supplies the energy source and who owns the failure modes that come with it. A purchasing team that reads that difference clearly will ask different questions in the first call with the supplier, and will avoid paying for a battery that its own store already stocks.
What the HMW3 without battery actually is
On the product page, the model field reads PowerDe HMW3 (Battery not included), made by Shenzhen PowerDe Automation Precision Equipment Co., Ltd in Shenzhen, with a hand-push mode of movement. The published specification table gives:
- Machine dimensions: L1150 mm × W520 mm × H1030 mm
- Heating power: 4.5 kW, semiconductor heating
- Box volume: 50 L clean water tank
- Water inlet: tap water inflow, 4-point internal tooth joint
- Cleaning modes: dry steam and wet steam
- Working power supply: 48 V battery
- Cleaning method: high-pressure water gun with nozzle
The page also lists leakage, short-circuit, high-temperature, high-voltage, water-shortage and high-voltage-explosion protection, and describes a PTC semiconductor heater with mobile-battery power that lets the machine be stopped and moved at any time. Its stated present use is cleaning and disinfecting hospital beds, medical machinery and similar items. Nothing on the page describes it as a kitchen, vehicle or production-line machine, so treat those as discussions to have with the supplier rather than as settled specifications.
Read the 48 V line carefully. The machine is a battery-fed machine either way; the "without battery" wording is not a change to the machine's electrical architecture. It is a change to the delivery package.
What "without battery" changes in the delivery package
The same 48 V requirement stays on the table. Three things move to your side of the transaction:
- The battery pack itself. The machine's working supply is 48 V. Without a bundled pack, the battery, its capacity and its condition become your line item, on your asset register, insured and depreciated by you.
- The charger. A pack you source locally must be matched to the machine's 48 V supply and to your shift pattern, and the matching evidence sits with you.
- The interface question. Connector type, cable gauge, and whether the protection functions on the machine see the battery you choose all become items you confirm, not items the supplier confirms by default.
In exchange you gain control. If your facility already runs 48 V battery packs for other mobile equipment, an existing charger, an existing swap routine and an existing storage room may absorb the new machine at close to zero marginal cost. That is the real reason the variant exists, and it is also the reason it is the wrong choice for a buyer with no 48 V history.
The questions to put in front of the supplier
The HMW3 page publishes dimensions, heating power, tank volume, inlet fitting, cleaning modes and supply voltage. It does not publish steam temperature, steam pressure, battery capacity, run time per charge, charger rating, machine weight, hose and wand lengths, the accessory list, noise level, or water use per hour. For a machine sold on the strength of dry steam versus wet steam, those gaps are the decision. Put them in writing before the quotation:
- What is the accepted battery specification for a customer-supplied 48 V pack: voltage window, connector, minimum and recommended capacity, and any protection requirement?
- Does using your own pack leave the leakage, short-circuit, high-voltage and water-shortage protections fully active, and does it affect warranty terms?
- What are the steam temperature and pressure figures for dry-steam and wet-steam operation, and how are they measured?
- At the capacity you recommend, what run time does a pack support, and how long does a recharge take on the recommended charger?
- Which accessories are in the box, and which are ordered separately?
- What does the supplier require for tap-water quality, given a 50 L clean water tank and a 4-point internal tooth inlet?
Ask for the missing numbers on the same paper for both variants. A supplier that answers the battery question with a specification sheet, rather than with "any 48 V pack will do", is a supplier whose integration work has been done already.
Matching the machine to the work you actually have
The HMW3 is a PowerDe cleaning equipment unit built for rooms and surfaces that a hand-push machine can reach: a bed frame, a piece of ward equipment, a corridor, a tiled wall, a machine housing. The footprint matters. At roughly 1150 mm long, 520 mm wide and 1030 mm high with a 50 L tank on board, it is a machine you push through a doorway and stop in a corner, not one you drive down a yard.
PowerDe sells a hand-push machine that ships with the pack installed, which is the simpler purchase for a first unit; see PowerDe HMW3 (including battery) for that configuration. It also sells mobile units that sit on the same 48 V idea but with a different duty cycle and hot-water mode as well: Driving Style Steam Cleaning Machine PowerDe HMW2 (without battery) covers dry steam, wet steam and hot water, so a buyer comparing cleaning modes, not just battery options, should read both pages against their own tasks.
Write your work list before you compare: which surfaces, how many per day, how far between the water tap and the farthest point of the route, how much floor and door width the machine must pass through. A machine picked from a specification table alone is often the wrong size on the first day of use.
Cost, risk and support for the battery-inclusive variant
A buyer comparing the two HMW3 configurations is comparing where risk sits, not which machine cleans better.
- With the battery included, one party is accountable for the machine and its power source together. Commissioning is one event, spares and charger are matched by the manufacturer, and the supplier answers for the whole unit. You pay for a pack you may already own.
- Without the battery, the machine price is lower and the pack can be standardised across your fleet, swapped from an existing store, and replaced on your schedule. Integration risk is yours until the supplier's accepted battery specification is in writing.
For one pilot machine in a facility with no 48 V equipment, that risk usually costs more than the battery saves. For a third or fourth unit in a facility that already manages 48 V packs and chargers, the reverse is normally true. Where the duty itself is unusual, customized steam cleaning equipment discussions let the configuration be settled against your task list instead of against the published table.
A short evaluation checklist
- Confirm you need a 48 V battery-fed, hand-push steam machine, and not a hot-water model, before comparing battery options at all.
- Get the accepted 48 V battery specification and connector from the supplier in writing, and check it against what your facility can supply and charge.
- Collect the unpublished figures: steam temperature and pressure, run time per charge, recharge time, weight, accessory list.
- Measure the route, the doorways and the water point against L1150 × W520 × H1030 mm and the 50 L tank capacity.
- Confirm warranty, protection-function and service terms for a customer-supplied battery, and keep the correspondence with the purchase order.
- Compare both HMW3 configurations side by side on total cost of the pack, charger, spare parts and downtime, not on the machine price alone.
Evaluate the variant as a delivery boundary. If your site can hold a correct 48 V pack and the paperwork to prove it matches, the version without a battery is a clean, cheaper way to standardise. If it cannot, the battery-inclusive configuration is the lower-risk purchase for the same cleaning result.
