Hyundai HYM40LI420SP battery self propelled four wheeled lawn mower (42cm cut) (Kit (with battery & charger))

£293.33 ex VAT (£352.00 inc VAT)

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The Hyundai HYM40LI420SP is a rechargeable low maintenance Lithium-Ion battery-powered self-propelled lawnmower from Hyundai. HYM40LI420SP is the ideal battery-powered lawn mower for medium to large-sized lawns bringing you a clean, green, cable-free mowing experience.

What’s Included?

  • HYM40LI420SP Battery Powered Lawnmower
  • 45L Hard Top Grass Collector
  • 40v Rechargeable Lithium-Ion Battery
  • Battery Charger
  • 2x Safety Keys & User Manual

Eco-Friendly Option
No Cables, No Petrol, No Pollution – the HYM40LI420SP lawnmower is powered by the market-leading 40v Lithium-ion 2.5Ah battery, no more messy fuel or dangerous mains cables.

No electric cord means mowing the lawn has never been easier or safer.

With a charging time of just 80 minutes and a battery lifespan of 1000+ charges, the HYM40LI420SP makes mowing your lawn as easy as possible and will provide an average working time of 15 minutes depending on the operating conditions.

45L Grass Catcher
The HYM40LI420SP mower uses a powerful 40v motor, with a cutting width of 415mm, it’s suited for medium to large-sized lawns. It also features a spacious quick release 45L easy airflow grass catcher with a hard lid, meaning you spend less time emptying the cuttings and more time mowing. Attaching and removing the grass collection bag couldn’t be simpler.

6 Cutting Heights
With 6 cutting heights, ranging from 25mm for a smooth lawn to 75mm for cutting longer grass, the HYM40LI3420SP puts you in control over the finish of your cut. The height is adjusted by a single lever, which easily moves through the cutting heights.

Safety Key
Using the mower couldn’t be easier, you simply have to insert the safety key, engage the lock-out button and pull back the Operator Presence Control lever. To use the self-propelled function, just push the rear lever forward.

Easy Assembly Lawnmower
It’s quick and easy to assemble out of the box, allowing you to get it in your garden for the first cut in no time at all. With no engine to service, you also don’t need to spend time checking oil, air filters or spark plugs, making it extremely easy to maintain.

Mulching Lawnmower
Comes with a mulching plug (your dropped cuttings become compost, creating a healthier-looking, greener lawn).

40v Lithium-Ion Battery
The 40v battery and charger are included with this unit.

The battery has an indicator light allowing you to see exactly how much life is left.

Key Features

  • No Cables, No Petrol, No Pollution – simply charge the batteries and you’re ready to go.
  • Powered by a Hyundai 40v lithium-ion 2.5Ah battery, designed for 1000+ charges.
  • Powered by a 800w Brushless Motor.
  • 42cm cutting width it’s ideal for cutting small to medium sized lawns.
  • Durable steel chassis weighing just 19.9kg with adjustable 6 cutting heights from 25mm to 75mm
  • The large easy to remove 45L grass catcher bag minimises the time you spend emptying the cuttings and features a grass level indicator
  • Safety feature – safety key prevents accidental start-ups, the removable key is located next to the battery and will disable the mower when removed.
  • No assembly needed, just unfold the handles and charge the battery
  • Extremely quiet running, eliminating any disturbance to neighbours.
  • Covered by Hyundai UK 3 year warranty.

Covered by Hyundai 3 Year Platinum Warranty.

Product specification

4 Wheeled




Rear Roller


Drive System

Self Propelled

Cutting Width

42cm / 16"

Power type



Rated Voltage


Run Time (with 40V 2.5aH battery)

20 minutes

Rear Discharge


Side Discharge


Starting System




Handle Type



3 Years

Cutting Height Control

Central – Single Lever – 6 Stages

Cutting Height

25 – 75mm (min – max)

Grass Collector Type

Fabric Bag with Hard Top

Grass Collector Capacity

45 Litre

Grass Collection


Cutting Deck Material



Kit (with battery & charger)