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.
STIHL RMA 448.3 V 18" Cordless Lawn Mower (Tool Only)
£699.00 inc. VAT
STIHL RM 253.3 T 20" Petrol Lawn Mower
Original price was: £579.00.£519.00Current price is: £519.00. inc. VAT
Sale
STIHL RMA 453.3 PV 20″ Cordless Lawn Mower (Tool Only)
Original price was: £779.00.£729.00Current price is: £729.00. inc. VAT
The STIHL RMA 453.3 PV is a feature-rich 20″ cordless lawn mower designed for large domestic lawns. With Vario self-drive and 4-in-1 mowing functions, it offers quiet, powerful, and flexible lawn care. Part of the professional AP battery system.
In Stock
Description
Why buy the STIHL RMA 453.3 PV 20″ Cordless Lawn Mower (Tool Only)?
- Generous 51cm (20″) cutting width ideal for larger lawns
- Variable speed self-propulsion (2.0 – 4.5 km/h) for effortless mowing
- Versatile 4-in-1 functionality: collect, mulch, side and rear discharge
- Dual battery slots with sequential discharge for extended, uninterrupted runtime
- Central cutting height adjustment from a low 20mm to a high 100mm
- Large 55-litre grass catcher with fill-level indicator
- Sold as a tool-only unit, compatible with the STIHL AP battery system
The STIHL RMA 453.3 PV is a high-performance cordless lawn mower from the AP System range, expertly designed for gardeners managing large lawns. This quiet yet powerful mower combines a wide 51cm (20″) cutting width with a variable speed drive, making it an ideal choice for efficient and comfortable lawn maintenance. Please note, this is a tool-only model; batteries and a charger must be purchased separately if not already owned.
Versatile 4-in-1 Mowing System
The RMA 453.3 PV offers exceptional flexibility with four distinct mowing methods, requiring no additional tools to switch between them. Users can choose to cut and collect with the 55-litre grass catcher box, cut and drop by removing the box, use the integrated side discharge flap, or mulch finely with the multi-blade and mulching attachment to return nutrients to the lawn.
Intelligent Power and Performance
Engineered for endurance, this mower features sequential battery discharge. It holds two AP batteries and automatically switches from the first to the second when depleted, ensuring longer, uninterrupted working times. With two recommended AP 300 S batteries, it can cover an area of up to 900m². The mower also includes an Eco mode to conserve energy, and intelligent electronics that maintain constant power output as the battery discharges. The POWER BOOST function delivers maximum performance when tackling tougher conditions.
Ergonomic and User-Friendly Design
Operator comfort is prioritised with a height-adjustable mono-comfort handlebar, which also folds for compact storage and provides easy access to the grass box. A built-in digital interface on the handlebar displays key information like battery charge level and the selected mowing mode. Smooth-running wheels ensure effortless manoeuvrability across the lawn, while the central lever allows for quick cutting height adjustments between 20mm and 100mm.
Durable and Robust Construction
The mower is built with a rugged, double-layered polymer deck that is lightweight, rust-proof, and UV-resistant for long-lasting stability and performance. Its IPX4 rating certifies it is protected against splashing water, making it suitable for use in typical British weather conditions.
| Battery Model | Max Area (m²) |
|---|---|
| AP 200 | up to 300 m² |
| AP 200 S | up to 300 m² |
| AP 300 S | up to 450 m² |
| AP 500 S | up to 540 m² |
Note: The stated area per charge is an estimate and can vary based on lawn conditions and operating mode. Performance is doubled when using two batteries.
As an established, authorised UK dealer for STIHL, Sims Garden Machinery has over 100 years of experience. When you purchase from us, you’re not just buying a box. Our trained sales staff are on hand in our Stratford-upon-Avon showroom to help you choose the right machine. For local customers, every mower comes with a free Pre-Delivery Inspection (PDI) by our trained mechanics, ensuring it’s built, tested, and ready to use. We also offer complimentary local delivery and a full handover demonstration to ensure you’re confident from the very first cut. This level of service and aftersales support from our on-site workshop is what sets us apart.
Not sure which machine or part is right for you?
Our team is here to help. Contact us today for expert advice.
Our team is here to help. Contact us today for expert advice.
Technical Specification
| Battery System | AP System |
| Drive Speed | 2.0 – 4.5 km/h (Variable) |
| Recommended Battery | AP 300 S |
| Device Weight (without battery) | 29 kg |
| Cutting Width | 51 cm / 20″ |
| Cutting Height | 20 – 100 mm |
| Grass Catcher Box Volume | 55 l |
| Max. Area per charge (AP 300 S) | 450 m² |
| Max. Area per charge (AP 500 S) | 540 m² |
| IP Rating | IPX4 |
| Sound Power Level (LWA) | 94 dB(A) |
| Vibration (ahw) | 1.80 m/s² |
Why buy from Sims Garden Machinery?
Authorised main dealer
We are authorised dealers for leading brands, meaning genuine parts, manufacturer-approved training, and warranty support you can rely on.
Real people, real support
No call centres. No ticket systems. Just a knowledgeable local team you can speak to when you need help.
Expert advice — not pushy sales
Our team are trained mechanics and product specialists, so you get honest, practical advice based on how you’ll actually use the machine.
Established, independent family business
We’re a long-standing independent dealer with deep roots in the local area — built on reputation, repeat customers, and word of mouth.
Frequently Asked Questions
Who is the STIHL RMA 453.3 PV best suited for?
This lawn mower is ideal for gardeners with medium to large-sized lawns, capable of covering up to 900m² with two AP 300 S batteries. Its variable speed self-propulsion and quiet operation make it perfect for those who want a powerful, low-noise mowing solution without the hassle of petrol engines.
What batteries and charger do I need for this mower?
The RMA 453.3 PV is part of the STIHL AP professional battery system and is sold as a tool-only unit. It requires a compatible STIHL AP battery (such as the recommended AP 300 S) and a charger (e.g., AL 301 or AL 500), which must be purchased separately.
What does ‘sequential battery discharge’ mean?
The mower has two battery slots. The sequential discharge feature means it draws power from one battery until it is fully depleted, and then automatically switches over to the second battery. This allows for longer, uninterrupted mowing sessions without needing to stop and manually swap batteries.
Can this lawn mower be used in the rain?
Yes, the STIHL RMA 453.3 PV has an IPX4 rating, which certifies it is protected against splashing water from all sides. This makes it suitable for use in damp grass or light rain, providing greater flexibility for your gardening schedule.
User Manuals / Downloads
Additional information
| 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. | 55 |
| Cutting MethodThe cutting mechanism used (e.g., Rotary or Cylinder). | Rotary |
| Cutting WidthThe width of the grass cut in a single pass. | 51 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). | Variable Speed |
| 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 |
| Power SourceThe primary energy source (e.g., Petrol 4-stroke, Battery, Electric). | Petrol |
| Weight (Net)The weight of the machine itself, excluding any fuel and packaging (kg). | 29 |
Reviews (0)
About STIHL
ChainsawsShop Now 
Hedge TrimmersShop Now 
Strimmers & BrushcuttersShop Now 
Lawn MowersShop Now 
Leaf Blowers & VacsShop Now 
Multi-Tools · KombiSystemShop Now 
Pressure WashersShop Now 
Shredders & ChippersShop Now 
SprayersShop Now 
ScarifiersShop Now 
Cordless · AK / AP / ASShop Now 
Accessories & PPEShop Now STIHL at Sims Garden Machinery
Sims Garden Machinery is a family-run business, serving gardeners since 1908, and an Approved STIHL Dealer in Stratford-upon-Avon — with one of the largest STIHL displays in the region: over 12 metres of the full range to see, hold and compare in person. From petrol and cordless chainsaws to hedge trimmers, brushcutters, leaf blowers, lawn mowers and pressure washers, we stock the STIHL line-up for homeowners, rural estates and professionals right across Warwickshire.
The STIHL battery system
STIHL's AK, AP and AS cordless ranges run a whole set of tools from one battery. Come and see the range in person and we'll help you choose the system that suits your garden.
Servicing, setup & support
Our on-site workshop services and repairs STIHL machines — whether you bought them from us or not — with genuine STIHL parts, chains and accessories. Plus free local delivery and handover on every new machine.
Shipping & Delivery
FREE PDI, DELIVERY & HANDOVER
NATIONAL DELIVERY
- Each machine will be tested prior to delivery.
- Orders will be sent out via either ThePalletNetwork or DHL insured service.
Reviews
There are no reviews yet.