The STIHL RMA 443 V cordless lawn mower combines a compact 41 cm cutting deck with infinitely variable self-propelled drive. It is designed for homeowners who want the quiet, straightforward operation of a cordless mower but also want powered wheel assistance for slopes, longer mowing sessions or more demanding garden layouts.
The Vario drive can be adjusted between 2.0 and 4.5 km/h using the control on the handlebar. You can slow the mower when working around flower beds, trees and narrow areas, then increase the speed across open sections of lawn. The speed of the wheels is controlled separately from the cutting blade, so changing your walking pace does not reduce the quality of the cut.
The RMA 443 V is part of STIHL’s 36 V AK System. Choose the tool-only mower if you already own suitable STIHL AK batteries, or select the complete kit containing an AK 30 S battery and AL 101 charger.
STIHL RMA 443 V at a glance
- 41 cm / 16-inch cutting width
- Infinitely variable Vario self-propelled drive
- Adjustable drive speed from 2.0 to 4.5 km/h
- Up to 350 m² per charge with the recommended AK 30 S battery
- Four mowing methods: collect, cut and drop, side discharge or mulch
- Central cutting-height adjustment from 20 to 100 mm
- 52-litre folding grass collection box with fill-level indicator
- Lightweight, corrosion-resistant polymer housing
- Height-adjustable folding mono-comfort handlebar
- Two AK battery slots for carrying a charged spare
- 26 kg machine weight without battery
- Power Boost, Constant Power and Eco mode
- IPX4 splashwater protection
Who is the STIHL RMA 443 V best suited to?
The RMA 443 V is best suited to small and medium domestic lawns where self-propelled drive will make mowing easier. Its 41 cm deck is more manoeuvrable than a wider 46 or 51 cm mower, making it particularly useful in gardens containing borders, paths, trees, play equipment or tighter turning areas.
It is a strong choice for:
- Lawns of up to approximately 350 m² with the recommended AK 30 S battery
- Sloping or gently undulating gardens
- Users who prefer powered wheel assistance
- Gardens with obstacles or narrower sections
- Customers who want to vary the mower speed to suit the terrain
- Existing owners of STIHL AK batteries and chargers
- Homeowners moving away from petrol or corded electric mowing
If your garden is flat and you are comfortable pushing the mower yourself, the STIHL RMA 443 push mower offers many of the same cutting features without powered drive. For larger, more open lawns, the wider STIHL RMA 448 V may reduce the number of passes required.
Variable-speed self-propelled drive
The defining feature of the RMA 443 V is its Vario wheel drive. Rather than operating at one fixed travelling speed, the mower can be adjusted continuously between approximately 2.0 and 4.5 km/h.
This allows you to:
- Use a slower pace around borders, corners and obstacles
- Increase the speed across open, regularly maintained lawn
- Reduce the physical effort required on slopes
- Match the mower to your preferred walking speed
- Slow down when cutting longer or more difficult grass
The powered drive assists the rear wheels while the cutting blade continues to run at the appropriate speed. This provides greater control than a conventional single-speed self-propelled mower.
Battery performance and lawn coverage
The RMA 443 V uses batteries from the STIHL AK System. A compatible AK battery can also power a wide selection of STIHL hedge trimmers, grass trimmers, chainsaws, blowers and other domestic garden machinery.
| STIHL battery | Manufacturer-estimated lawn area |
|---|---|
| AK 10 | Up to 135 m² |
| AK 20 | Up to 270 m² |
| AK 30 S – recommended | Up to 350 m² |
These figures are manufacturer test estimates. The area achieved in normal use will vary according to grass length, moisture, cutting height, terrain, use of the wheel drive, battery condition and mowing technique.
The mower has two AK battery slots. One battery powers the mower while a second charged battery can be carried in the spare slot. When the first battery is depleted, the user manually moves to the second battery; the mower does not switch between them automatically.
Four mowing methods
The STIHL RMA 443 V offers four different ways to manage the grass clippings:
- Cut and collect: collect clippings in the 52-litre grass box for a tidy finish.
- Cut and drop: remove the collection box and allow the grass to fall behind the mower.
- Side discharge: use the integrated side-discharge flap when cutting longer grass or when collection is unnecessary.
- Mulching: finely cut the clippings and return them to the lawn using the supplied mowing configuration.
The different options make the mower suitable for regular weekly lawn care as well as occasions when the grass is longer or you do not want to collect the clippings.
Power Boost, Constant Power and Eco mode
STIHL’s intelligent electronics allow compatible tools and batteries to communicate with each other. Power Boost makes the available battery output accessible when cutting conditions require more performance.
Constant Power helps maintain consistent cutting performance as the battery charge decreases. Eco mode automatically adapts the motor output to the work being carried out, reducing unnecessary energy use when maximum power is not needed.
The flow-optimised blade is shaped to reduce unnecessary air resistance, helping the mower make efficient use of the battery’s stored energy.
41 cm polymer cutting deck
The 41 cm / 16-inch deck provides a useful balance between mowing efficiency and manoeuvrability. It is wide enough to cover a typical domestic lawn effectively while remaining easier to guide through tighter areas than a larger 46 or 51 cm mower.
The double-layer polymer housing is resistant to corrosion and UV exposure while helping to keep the mower’s weight to approximately 26 kg without its battery.
20–100 mm central cutting-height adjustment
The cutting height can be adjusted centrally from 20 to 100 mm. One control changes the height across the mower rather than requiring each wheel to be altered separately.
Use a higher setting for longer grass, uneven ground or the first cut of the season. The height can then be reduced gradually during subsequent cuts rather than removing too much growth in one pass.
52-litre folding grass box
The RMA 443 V has a 52-litre folding grass collection box with an integrated fill-level indicator. The airflow helps fill the box efficiently, while the folding design makes the collected grass easier to empty.
The mono-comfort handlebar is mounted on one side of the mower, leaving clearer access when removing or replacing the grass box.
Comfortable handling and compact storage
The handlebar can be adjusted to suit the user’s height without tools. It also folds for transport and storage, helping the mower occupy less room in a garage or shed.
An integrated carrying handle assists when repositioning or transporting the mower. The powered drive reduces effort while mowing, although customers should be aware that the machine weighs approximately 26 kg before the battery is installed.
STIHL RMA 443 V technical specification
| Model | STIHL RMA 443 V |
|---|---|
| Battery system | STIHL AK System, 36 V |
| Recommended battery | STIHL AK 30 S |
| Approximate area with AK 30 S | Up to 350 m² |
| Drive | Infinitely variable Vario self-propelled drive |
| Drive speed | 2.0–4.5 km/h |
| Cutting width | 41 cm / 16 inches |
| Cutting height | 20–100 mm, centrally adjusted |
| Mowing methods | Collect, cut and drop, side discharge and mulch |
| Grass collection box | 52 litres with fill-level indicator |
| Housing | Double-layer polymer |
| Battery slots | Two |
| Weight without battery | 26 kg |
| Rated power | 1,200 W |
| Measured sound pressure level | 75 dB(A) |
| Guaranteed sound power level | 90 dB(A) |
| Vibration value | 1.4 m/s² |
| Protection rating | IPX4 |
| Tool-only part number | WA400111420 |
| Kit part number | WA400111442 |
Which STIHL cordless mower should you choose?
| Model | Best suited to |
|---|---|
| STIHL RMA 443 | Flat lawns where a 41 cm push mower is sufficient and powered drive is unnecessary |
| STIHL RMA 443 V | Small to medium lawns where variable-speed drive and manoeuvrability are important |
| STIHL RMA 248 T | Customers wanting a wider 46 cm steel-deck mower with single-speed powered drive |
| STIHL RMA 448 V | Larger or more open lawns where a wider 46 cm deck and variable drive are preferable |
Browse our wider selections of cordless lawn mowers and STIHL lawn mowers.
Masseys recommendation
The RMA 443 V is a particularly good option when you want self-propelled assistance but do not want a large or cumbersome mower. The 41 cm deck is easier to manoeuvre than wider machines, while the variable drive gives much more control than a fixed-speed self-propelled system.
We would recommend it for sloping or more complicated gardens up to approximately 350 m². For a flat lawn, the less expensive push RMA 443 may be sufficient. For a large, open rectangular lawn, the wider RMA 448 V is likely to cover the ground more quickly.
Why buy the STIHL RMA 443 V from Masseys?
Masseys is a family-run STIHL dealer based in Woodville, Swadlincote. Our garden-machinery team can help you choose the correct mower and battery combination for your lawn rather than simply supplying a boxed machine.
- Genuine STIHL machinery and warranty support
- Tool-only and complete battery-kit options
- Practical advice about lawn size, gradients and mower choice
- Garden-machinery assembly and setup support
- In-house servicing, blade maintenance and repairs
- Local collection and delivery options
For ongoing maintenance and aftersales support, visit our garden machinery servicing and repairs department.
Frequently asked questions
Is the STIHL RMA 443 V self-propelled?
Yes. It has infinitely variable Vario wheel drive, adjustable from approximately 2.0 to 4.5 km/h. This allows you to match the mower’s travelling speed to your walking pace, the terrain and the grass conditions.
What is the difference between the RMA 443 and RMA 443 V?
Both have a 41 cm cutting width, but the RMA 443 is a push mower. The RMA 443 V adds variable-speed powered wheel drive, making it easier to use on slopes and during longer mowing sessions.
How large a lawn can the RMA 443 V mow?
STIHL estimates that the recommended AK 30 S battery can cover up to approximately 350 m² per charge. Actual coverage will vary according to the lawn, battery and operating conditions.
Does the RMA 443 V include a battery and charger?
That depends on the option selected. The tool-only version excludes the battery and charger. The complete kit includes one AK 30 S battery and one AL 101 charger.
Can I use an AK 20 battery?
Yes. STIHL lists an estimated coverage of up to approximately 270 m² with the AK 20. The AK 30 S is recommended and provides up to approximately 350 m² under manufacturer test conditions.
Does the mower use both batteries automatically?
No. One battery powers the mower while the spare slot carries a second battery. When the first battery is depleted, the user manually changes to the second battery.
Can the STIHL RMA 443 V mulch?
Yes. Mulching is one of its four mowing methods, alongside collection, cut and drop, and side discharge.
Is the RMA 443 V suitable for sloping lawns?
Yes. Its variable-speed self-propelled drive can significantly reduce the effort needed on slopes. The speed can be lowered for greater control or increased on open, level sections.
How heavy is the STIHL RMA 443 V?
The mower weighs approximately 26 kg without its battery. Powered drive assists during mowing, but the weight should still be considered when lifting it into a vehicle or over steps.
Can Masseys service the RMA 443 V?
Yes. Our in-house garden-machinery workshop can provide inspections, blade maintenance, servicing and repairs for the machinery brands we support.
Specifications checked against current STIHL UK product information. Manufacturer battery-area figures are estimates and may vary with grass length, moisture, terrain, cutting height, use of the wheel drive, battery condition and mowing technique.
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