RMA 243 Cordless Lawn Mower
SKU: Stihl | RM-WA20 011 1400
Key Features
- 41cm cutting width, lightweight quiet push mower
- Part of the STIHL AK System — interchangeable batteries
- Tool-only listing (battery/charger sold separately or as a set)
- STIHL cashback available (up to £50) on this purchase
STIHL Approved Dealer
As a STIHL Approved Dealer, we supply genuine UK-spec machines with full manufacturer warranty, professional preparation, and expert aftersales support.
- Regular price
- £418.50 Ex VAT
- £502.20 Inc VAT
- RRP: £465.00 Ex VAT
- Sale price
- £418.50 £418.50 Ex VAT
- Regular price
-
- £502.20 £502.20 Inc VAT
Free Delivery Over £75 *
Worldwide Shipping from the UK
Trusted UK Arborist Retailer
30-Day Easy Returns
Product information & specifications
STIHL RMA 243 Cordless Lawn Mower (Tool Only) - 41cm
STIHL Cashback Available
Save with official STIHL cashback on this product
This product qualifies for official STIHL cashback. Cashback value depends on whether you buy the tool only or with an AK battery and AL charger.
| Purchase Type | Cashback Amount |
|---|---|
| Tool Only | £40 |
| Tool + AK Battery & AL Charger | £50 |
Cashback must be claimed within 30 days of purchase.
The STIHL RMA 243 cordless lawn mower (tool only) is a lightweight, quiet battery-powered push mower built for small to medium-sized home gardens. As part of STIHL's AK System, it delivers clean, low-noise mowing with the convenience of interchangeable batteries across the AK range.
Please note: this listing is the tool-only version (no battery or charger). This model is also available as a set with a battery and charger — please make sure you select the correct option before adding to basket.
Built with a durable sheet steel deck, the RMA 243 features a 41cm (16") cutting width and single-point cutting height adjustment from 20mm to 100mm, making it easy to adapt to seasonal growth and your preferred finish.
The RMA 243 is powered by an AK 20 battery (recommended) and includes two battery slots in the powerhead, allowing you to carry a second AK battery and switch over quickly when the first runs out. With the recommended AK 20 battery, you can mow lawns up to 230m² on a full charge (working area varies depending on grass conditions and cutting height).
With its flexible 4-in-1 mowing system, you can choose the best method for your lawn and conditions: collect, cut and drop, side discharge, or mulch using the multi-blade and mulching attachment. The 52-litre grass catcher box features a fill-level indicator and is designed for fast, clean emptying.
Comfort is enhanced by the mono-handlebar, which makes it easier to remove the catcher and provides straightforward, ergonomic control. The handlebar is height adjustable and foldable for compact storage after use, and includes a 10-year domestic warranty.
Key Features & Benefits
- Tool only — battery & charger not included
- Quiet, lightweight cordless push mower for home gardens
- 41cm / 16" cutting width
- Durable sheet steel deck
- Single-point cutting height adjustment (20-100mm)
- AK System compatible (recommended AK 20 battery)
- Two battery slots for quick battery switching
- 4-in-1 mowing: collect, drop, side discharge, mulch
- 52-litre grass catcher box with fill-level indicator
- Height-adjustable, foldable mono-handlebar (10-year domestic warranty)
4-in-1 Mowing Options
- Cut & collect with the grass catcher box fitted
- Cut & drop by removing the grass catcher box
- Side discharge using the integrated deck flap
- Mulching with the multi-blade and mulching attachment
Technical Details
Why Choose the STIHL RMA 243?
STIHL is the world's best-selling outdoor power tool brand, and the RMA 243's dual battery slots are a genuine practical advantage for larger domestic gardens — swap to a second AK battery mid-mow rather than stopping to recharge. The 4-in-1 mowing system (collect, drop, side discharge, mulch) also means one mower adapts to seasonal lawn conditions instead of needing separate attachments bought later.
Also Known As
Also searched for as: STIHL RMA243, STIHL 41cm cordless mower, STIHL AK System lawnmower, STIHL dual battery mower.
FAQs
Does this include a battery and charger?
No, this is the tool-only version. A set including an AK 20 battery and AL 101 charger is also available — check you've selected the correct option.
Why does the mower have two battery slots?
The second slot lets you carry a spare AK battery and switch over quickly once the first runs out, extending your mowing session without stopping to recharge.
How much lawn can I cover on one charge?
Up to 230m² with the recommended AK 20 battery, depending on grass conditions and cutting height.
What mowing modes are available?
Four modes: cut and collect, cut and drop, side discharge, and mulching with the multi-blade and mulching attachment.
Is the handlebar adjustable?
Yes, the mono-handlebar is height-adjustable and folds down for compact storage.
Helpful Links
If you're choosing the right setup for this product, explore the related categories, batteries, chargers and cordless tool ranges below.
Shop Related Categories
Complete Your Setup
Helpful Guides
| Cutting width | 41 cm |
| Cutting height | 20 - 100 mm |
| Grass catcher box volume | 52 l |
| Device width | 51 cm |
| Device height | 117 |
| Front wheel diameter | 180 mm |
| Rear wheel diameter | 200 mm |
| Drive | -- |
| Rated power | 1200 W |
| Rated speed of sweeping attachment | 3000 rpm |
| Device weight | 26 kg |
| Sound power level, guaranteed LWA | 90 dB(A) |
| Measured sound pressure level LpA | 76 dB(A) |
| Uncertainty factor, sound pressure level KpA | 2 dB(A) |
| Vibration, guide bar, ahw | 1.4 m/s² |
| Vibration uncertainty K | 0.7 m/s² |
| Battery system | AK |
| IPX Rating | IPX4 |
STIHL RMA 243 Cordless Lawn Mower (Tool Only) - 41cm
STIHL Cashback Available
Save with official STIHL cashback on this product
This product qualifies for official STIHL cashback. Cashback value depends on whether you buy the tool only or with an AK battery and AL charger.
| Purchase Type | Cashback Amount |
|---|---|
| Tool Only | £40 |
| Tool + AK Battery & AL Charger | £50 |
Cashback must be claimed within 30 days of purchase.
The STIHL RMA 243 cordless lawn mower (tool only) is a lightweight, quiet battery-powered push mower built for small to medium-sized home gardens. As part of STIHL's AK System, it delivers clean, low-noise mowing with the convenience of interchangeable batteries across the AK range.
Please note: this listing is the tool-only version (no battery or charger). This model is also available as a set with a battery and charger — please make sure you select the correct option before adding to basket.
Built with a durable sheet steel deck, the RMA 243 features a 41cm (16") cutting width and single-point cutting height adjustment from 20mm to 100mm, making it easy to adapt to seasonal growth and your preferred finish.
The RMA 243 is powered by an AK 20 battery (recommended) and includes two battery slots in the powerhead, allowing you to carry a second AK battery and switch over quickly when the first runs out. With the recommended AK 20 battery, you can mow lawns up to 230m² on a full charge (working area varies depending on grass conditions and cutting height).
With its flexible 4-in-1 mowing system, you can choose the best method for your lawn and conditions: collect, cut and drop, side discharge, or mulch using the multi-blade and mulching attachment. The 52-litre grass catcher box features a fill-level indicator and is designed for fast, clean emptying.
Comfort is enhanced by the mono-handlebar, which makes it easier to remove the catcher and provides straightforward, ergonomic control. The handlebar is height adjustable and foldable for compact storage after use, and includes a 10-year domestic warranty.
Key Features & Benefits
- Tool only — battery & charger not included
- Quiet, lightweight cordless push mower for home gardens
- 41cm / 16" cutting width
- Durable sheet steel deck
- Single-point cutting height adjustment (20-100mm)
- AK System compatible (recommended AK 20 battery)
- Two battery slots for quick battery switching
- 4-in-1 mowing: collect, drop, side discharge, mulch
- 52-litre grass catcher box with fill-level indicator
- Height-adjustable, foldable mono-handlebar (10-year domestic warranty)
4-in-1 Mowing Options
- Cut & collect with the grass catcher box fitted
- Cut & drop by removing the grass catcher box
- Side discharge using the integrated deck flap
- Mulching with the multi-blade and mulching attachment
Technical Details
Why Choose the STIHL RMA 243?
STIHL is the world's best-selling outdoor power tool brand, and the RMA 243's dual battery slots are a genuine practical advantage for larger domestic gardens — swap to a second AK battery mid-mow rather than stopping to recharge. The 4-in-1 mowing system (collect, drop, side discharge, mulch) also means one mower adapts to seasonal lawn conditions instead of needing separate attachments bought later.
Also Known As
Also searched for as: STIHL RMA243, STIHL 41cm cordless mower, STIHL AK System lawnmower, STIHL dual battery mower.
FAQs
Does this include a battery and charger?
No, this is the tool-only version. A set including an AK 20 battery and AL 101 charger is also available — check you've selected the correct option.
Why does the mower have two battery slots?
The second slot lets you carry a spare AK battery and switch over quickly once the first runs out, extending your mowing session without stopping to recharge.
How much lawn can I cover on one charge?
Up to 230m² with the recommended AK 20 battery, depending on grass conditions and cutting height.
What mowing modes are available?
Four modes: cut and collect, cut and drop, side discharge, and mulching with the multi-blade and mulching attachment.
Is the handlebar adjustable?
Yes, the mono-handlebar is height-adjustable and folds down for compact storage.
Helpful Links
If you're choosing the right setup for this product, explore the related categories, batteries, chargers and cordless tool ranges below.
Shop Related Categories
Complete Your Setup
Helpful Guides
| Cutting width | 41 cm |
| Cutting height | 20 - 100 mm |
| Grass catcher box volume | 52 l |
| Device width | 51 cm |
| Device height | 117 |
| Front wheel diameter | 180 mm |
| Rear wheel diameter | 200 mm |
| Drive | -- |
| Rated power | 1200 W |
| Rated speed of sweeping attachment | 3000 rpm |
| Device weight | 26 kg |
| Sound power level, guaranteed LWA | 90 dB(A) |
| Measured sound pressure level LpA | 76 dB(A) |
| Uncertainty factor, sound pressure level KpA | 2 dB(A) |
| Vibration, guide bar, ahw | 1.4 m/s² |
| Vibration uncertainty K | 0.7 m/s² |
| Battery system | AK |
| IPX Rating | IPX4 |
STIHL Warranty
STIHL offer a 1 year professional warranty or 2 year domestic warranty with all of their machines.
The following exceptions apply:
- AK System, AS System and AI Line cordless products aren't covered under warranty when used by professionals
- AP System machines, batteries and chargers - 2 year professional warranty
- Pressure washers - 2 year professional warranty or 3 year domestic warranty
- Mowers, tillers, shredders, scarifiers & iMOW machines - See STIHL's website here
Extend your Stihl warranty by an additional year when purchasing a STIHL Smart Connector with selected machinery from the petrol and cordless range. Extends your petrol warranty from 1 to 2 years AND 2 to 3 years on select cordless tools.
STIHL offer a 1 year professional warranty or 2 year domestic warranty with all of their machines.
The following exceptions apply:
- AK System, AS System and AI Line cordless products aren't covered under warranty when used by professionals
- AP System machines, batteries and chargers - 2 year professional warranty
- Pressure washers - 2 year professional warranty or 3 year domestic warranty
- Mowers, tillers, shredders, scarifiers & iMOW machines - See STIHL's website here
Extend your Stihl warranty by an additional year when purchasing a STIHL Smart Connector with selected machinery from the petrol and cordless range. Extends your petrol warranty from 1 to 2 years AND 2 to 3 years on select cordless tools.
Delivery & Returns
UK Delivery
Fast, reliable delivery from our UK warehouse.
- Free UK delivery on eligible orders over £75 +VAT. Long, heavy or oversized items may incur an additional delivery charge, shown at checkout.
- UK Standard Delivery from £3.60 + VAT
Estimated delivery: 2–4 working days - Next Working Day Delivery – £6.00 + VAT
Order before 3:00pm (Monday–Friday) for next working day delivery
All UK orders are dispatched Monday–Friday and sent via a tracked courier service.
International Delivery
We ship worldwide from the UK.
- Europe from £10.00 - Estimated delivery: 2–7 working days
- Rest of the World from £12.00- Estimated delivery: 2–11 working days
Shipping costs and delivery times are calculated at checkout based on destination and order contents.
Customs, Duties & Taxes
International orders may be subject to local import duties, taxes, or customs charges.
When UPS is selected at checkout, applicable duties and taxes are included in the total price. For other shipping services, duties and taxes may be charged separately on delivery and are the responsibility of the recipient.
Customs processing times may affect delivery estimates.
Returns
30-Day Return Policy
- Items can be returned within 30 days of delivery
- Products must be unused and in original condition
- Return postage costs apply unless the item is faulty or incorrect
For full details, please visit our Shipping & Returns page.
UK Delivery
Fast, reliable delivery from our UK warehouse.
- Free UK delivery on eligible orders over £75 +VAT. Long, heavy or oversized items may incur an additional delivery charge, shown at checkout.
- UK Standard Delivery from £3.60 + VAT
Estimated delivery: 2–4 working days - Next Working Day Delivery – £6.00 + VAT
Order before 3:00pm (Monday–Friday) for next working day delivery
All UK orders are dispatched Monday–Friday and sent via a tracked courier service.
International Delivery
We ship worldwide from the UK.
- Europe from £10.00 - Estimated delivery: 2–7 working days
- Rest of the World from £12.00- Estimated delivery: 2–11 working days
Shipping costs and delivery times are calculated at checkout based on destination and order contents.
Customs, Duties & Taxes
International orders may be subject to local import duties, taxes, or customs charges.
When UPS is selected at checkout, applicable duties and taxes are included in the total price. For other shipping services, duties and taxes may be charged separately on delivery and are the responsibility of the recipient.
Customs processing times may affect delivery estimates.
Returns
30-Day Return Policy
- Items can be returned within 30 days of delivery
- Products must be unused and in original condition
- Return postage costs apply unless the item is faulty or incorrect
For full details, please visit our Shipping & Returns page.

