Stihl RMA 443.3 Cordless Lawnmower – 41cm Cut (AK Version – New for 2024)

AK Battery System

£409.04£540.00 (inc VAT)


The RMA 443 (RMA 443.3) from STIHL is a battery-powered push-along lawn mower designed for users looking to cut medium-sized to large lawns at home. Part of a new range of 4 Series battery-powered lawn mowers, it’s a lightweight and quiet mower that is fitted with innovative key features that make this the ideal choice for gardeners at home.

  • Cordless lawn mower with 41 cm cutting width
  • Individual tool without battery and without charger
  • Suitable for smaller lawns
  • Easy handling thanks to the height-adjustable handlebar
  • Cutting height can be adjusted from 20 mm to 100 mm
  • Fitted with 52-litre grass collection box with fill-level display

This lawn mower is built with a rugged polymer deck that is lightweight, rust proof and double layered for additional stability. It’s UV resistant, has a 41 cm cutting width and single point height adjustment that is adjustable between 20 – 100 mm. The RMA 443 is part of the AK System range of tools and is powered by an AK 20 battery that is interchangeable with other machines across the range. There are two slots in the powerhead for two AK batteries, so when the first runs out of power you can quickly switch to the second. On a full charge with the recommended AK 20 battery you will be able to mow lawns up to 300 m2.

The RMA 443 has 4 different ways of mowing. No additional tools are required but we do recommend you refer to the owner’s manual before working. You can either:

  • Cut & collect with the grass catcher box fitted
  • Cut & drop by removing the grass catcher box
  • Side discharge with the flap that is integrated into the deck
  • Mulch by switching it to mulch mode

The comfort mono-handlebar allows easy access to the grass catcher box, making it easier to remove and empty when it’s full – plus, thanks to the fill level indicator on the grass catcher box you’ll know exactly when to empty the box too! The 52-litre grass catcher box is ergonomically designed and easy to fully open for fast emptying. The sturdy mono-handlebar is height adjustable and foldable for compact storage after use.

5 Year Warranty

This mower comes with a 5 Year Warranty, subject to product registration. Full warranty terms available on the Stihl GB website.


Cutting width 41 cm
Cutting height 20 – 100 mm
Cutting height adjustment AK
Grass catcher box volume 52 l
Speed 2,0 – 4,5 km/h
Rated power 1200 W
Weight 20 kg
Guaranteed sound power level 90 dB(A)
Measured sound pressure level 75 dB(A)
Sound pressure level uncertainty factor 2 dB(A)
Vibration level ahw 1.4 m/s²
Uncertainty factor 0.7 m/s²
Cordless power system AK
Weight 24.95 kg
Dimensions 89.0 × 51.5 × 54.0 cm

Power Type


Cutting Width

41cm (16")


Unit Only, Kit (Unit inc. AK 20 Battery + AL 101 Charger)


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