£649.00 inc. VAT
The STIHL RMA 443.3 V is a powerful and versatile cordless lawn mower with a 16″ cutting width and Vario self-drive, perfect for homeowners with medium to large lawns seeking quiet, efficient performance. (Tool Only – battery & charger sold separately).
Need a battery and charger? Buy as a kit and save £££ (discount applied at checkout)
The STIHL RMA 443.3 V is a battery-powered self-propelled lawn mower designed for home gardeners looking to maintain medium-sized to large lawns with ease and efficiency. As part of STIHL’s 4 Series range, it combines lightweight handling with quiet operation, making it an excellent choice for residential areas. This model is supplied as a tool only, allowing you to use existing batteries and chargers from the STIHL AK System.
Engineered for durability, the mower features a rugged polymer deck that is lightweight, rust-proof, and double-layered for extra stability. It’s also UV-resistant, ensuring it withstands the elements. The 41 cm (16″) cutting width is ideal for covering ground efficiently, while the single-point height adjustment offers a wide cutting range from 20mm to 100mm.
A standout feature is the Vario self-drive, which allows you to adjust the mowing speed between 2.0 and 4.5 km/h via a control lever, matching your personal pace and lawn conditions perfectly. The mower’s versatility is further enhanced by its four cutting modes, which can be changed without tools: standard collection into the 52-litre grass box, side discharge, rear discharge (by removing the box), and an integrated mulching function.
The innovative comfort mono-handlebar provides unrestricted access to the grass catcher box, making removal and emptying significantly easier. This sturdy handlebar is also height-adjustable for ergonomic operation and folds down for compact, space-saving storage. The large 52-litre grass box includes a fill-level indicator, so you always know when it’s time to empty.
The RMA 443.3 V is packed with intelligent STIHL technology. The powerhead has two slots for AK batteries, enabling a quick switch-over when the first is depleted, extending your working time. Eco Mode automatically adjusts the engine speed to the required power, conserving energy for longer runtimes. The flow-optimised blades cut grass with minimal resistance, making the most of the battery’s charge. With an IPX4 rating, the mower is certified for use in all weather conditions.
| Battery Model | Max. Area per Charge |
|---|---|
| AK 10 | up to 135 m² |
| AK 20 | up to 270 m² |
| AK 30 | up to 350 m² |
| AK 30 S | up to 350 m² |
Please note: The stated area output per battery charge may vary depending on the application and operating mode.
As an established STIHL authorised dealer with over 100 years of experience, Sims Garden Machinery is more than just a box-shifter. Our trained sales staff are on hand to offer expert advice at our Stratford-upon-Avon showroom, ensuring you choose the right machine for your needs. For local customers, this lawnmower benefits from our free pre-delivery inspection (PDI) by our trained mechanics, local delivery, and a comprehensive handover demonstration, giving you complete confidence from day one.
| Specification | Value |
|---|---|
| Battery System | AK System |
| Drive Speed | 2.0 – 4.5 km/h (Variable) |
| Recommended Battery | AK 30 S |
| Device Weight (without battery) | 26 kg |
| Cutting Width | 41 cm / 16″ |
| Cutting Height | 20 – 100 mm |
| Rated Speed | 3000 rpm |
| IP Rating | IPX4 (Splashwater protected) |
| Max. Area per Charge (AK 10) | 135 m² |
| Max. Area per Charge (AK 20) | 270 m² |
| Max. Area per Charge (AK 30 / 30 S) | 350 m² |
| Grass Catcher Box Volume | 52 l |
| Sound Power Level (LWA) | 90 dB(A) |
| Vibration Value (ahw) | 1.40 m/s² |
We are authorised dealers for leading brands, meaning genuine parts, manufacturer-approved training, and warranty support you can rely on.
No call centres. No ticket systems. Just a knowledgeable local team you can speak to when you need help.
Our team are trained mechanics and product specialists, so you get honest, practical advice based on how you’ll actually use the machine.
We’re a long-standing independent dealer with deep roots in the local area — built on reputation, repeat customers, and word of mouth.
This mower is ideal for home gardeners with medium to large lawns, capable of covering up to approximately 350 m² on a single AK 30 S battery charge. Its Vario self-drive makes it particularly good for sloped gardens or for users who prefer an assisted mowing experience.
This mower is part of the STIHL AK System. It is compatible with all AK batteries (AK 10, AK 20, AK 30, AK 30 S) and chargers from this range. This model is sold as ‘Tool Only’, so the battery and charger must be purchased separately if you don’t already own them.
The RMA 443.3 V is highly versatile, offering four mowing functions without needing extra tools: standard collection into the 52-litre grass box, side discharge using the integrated flap, rear discharge (by removing the box), and mulching.
No, it’s designed for convenient storage. The height-adjustable mono-handlebar can be folded down, making the mower compact enough to store easily in a garage or shed.
Buying from an authorised STIHL dealer like Sims Garden Machinery ensures you receive a genuine product with a full UK warranty. For local customers, our trained mechanics perform a free pre-delivery inspection (PDI) and provide a handover demonstration to ensure you are comfortable with the machine’s operation and features.
| Dimensions | 120 × 54 × 55 cm |
|---|---|
| Brand | STIHL |
| Blade Brake ClutchIndicates if the blade can be stopped while the engine keeps running. | FALSE |
| Collector SizeThe capacity of the grass collection bag or box in litres. | 52 |
| Cutting MethodThe cutting mechanism used (e.g., Rotary or Cylinder). | Rotary |
| Cutting WidthThe width of the grass cut in a single pass. | 41 cm |
| Deck MaterialThe material the cutter deck is constructed from (e.g., Steel, Aluminium). | Polymer |
| Drive TypeHow the mower is propelled (e.g., Push, Self-Propelled, Variable Speed). | Self-Propelled |
| Mowing FunctionsAvailable mowing modes (e.g., Collection, Mulching, Side-Discharge). | [“Collection”,”Mulch”,”Side-Discharge”] |
| Rear RollerIndicates if the mower features a rear roller for creating lawn stripes. | FALSE |
As a brand, STIHL's international reputation goes before it and the name is well known and respected by homeowners and gardening professionals alike.
STIHL has created and honed a number of innovations, particularly in the development of its chainsaws, one of its flagship products. STIHL chainsaws are well known and sought after for their power, sturdy construction, durability and user-friendly features!
We offer a free delivery service for all machines within a 30 mile radius. Not only that; we build, inspect and run up every machine prior to delivery. Making sure you get a fully functional machine that is set-up and ready for use. On delivery we will run through with you any instructions & maintenance advice so you are comfortable with your new machine.
Free local delivery and handover
Industry trained sales team
In-house machinery repairs
Family run since 1908
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