Hyundai HYM120LI510 2 x 60V Lithium Ion Cordless Battery Powered Self Propelled Lawn Mower With 2x Batteries and Charger

Hyundai HYM120LI510 2 x 60V Lithium Ion Cordless Battery Powered Self Propelled Lawn Mower With 2x Batteries and Charger

Availability: Out of stock

£524.99 inc. VAT £437.49 ex. VAT
Product Out of Stock Subscription
Email :
  (Notify me when this product is back in stock)

  • No Cables, No Petrol, No Pollution - simply charge the battery and you’re ready to go.

  • Powered by 2 x LG lithium-ion 2.5Ah battery, designed for 1000+ charges.

  • 510mm cutting width it’s ideal for cutting medium to large sized lawns.

  • Durable steel chassis weighing just 27.4kg with 10 position cutting heights from 30mm to 90mm.

  • The easy to remove and spacious 65L grass catcher bag minimises the time you spend emptying the cuttings.

  • Rear discharge, side discharge, collect and mulching options.

  • Quick and easy to assemble, with foldable handles for easy transportation and storage.

  • Extremely quiet running, eliminating any disturbance to neighbours.

  • Covered by Hyundai UK 3 year warranty.

  • Full UK service & parts operation to maintain your Lawn Mower for years to come



Medium To Large Sized Lawns with 2 x Batteries and Charger
The HYM120LI510 is a rechargeable low maintenance lithium ion battery powered self propelled lawnmower from Hyundai. HYM120LI510 is the ideal battery powered lawnmower from medium to large sized lawns.  The big 21” cut, together with the high capacity batteries, allow the professional user to cut up to 1700 Sq meters with a single charge.

Clean, Safe, Green
No Cables, No Petrol, No Pollution - the HYM120LI510 lawn mower is powered by the market leading LG dual58v Lithium-ion 2.5Ah batteries, no more messy fuel or dangerous mains cables.

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

Smart Batteries
With a fast charging time of just 45 minutes per battery, and a battery lifespan of 1000+ charges, the HYM120LI510 makes mowing your lawn as easy as possible and will provide 35 minutes of cutting time under normal operating conditions.

Utimate Durability
The HYM120LI510 mower is powered by a maintenance-free, brushless motor which means the mower has a long service life. Brushless motors are maintenance free and designed to offer many years of trouble-free use. Lower quality mowers use a less efficient and higher maintenance brushed motor. High torque brushless motor offers petrol power level with 90% efficiency and a high life durability.

Large Cutting Width
With a large cutting width of 510mm, it’s suited for medium to large sized lawns. It also features a spacious quick release 65L grass catcher with a hard lid, meaning you spend less time emptying the cuttings and more time mowing.

65L Grass Collector
Attaching and removing the collection bag couldn’t be simpler, and the convenient grass level indicator on the top of the grass catcher will always inform you when the grass catcher is ready to be emptied.

10 Cutting Heights
With ten cutting heights, ranging from 30mm for a smooth lawn to 90mm for cutting longer grass, the HYM120LI510 puts you in control over the finish of your cut. The height is adjusted by a single lever, which cycles through the cutting heights in a matter of seconds.

Ultimate Safety
Starting 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. This easy starting method removes the strain associated with recoil pull start lawn mowers.

Compact Design For Storage
The handles are adjustable for height and also fold down over the main power unit, which makes this compact lawn mower easy to carry and store in a garden shed, garage and transport in the boot of your car.

User Friendly
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.

Accessories Included
Comes with mulching plug and side discharge chute.

In The Box:

  • HYM120LI510 Battery Powered Lawnmower
  • 65L Hard Top Grass Collector
  • 2 x LG Rechargeable Lithium-Ion Batteries
  • Battery Charger
  • User Manual

Covered by Hyundai 3 year warranty.

Please Note - Latest models may differ slightly than those shown in the video due to continuous improvement.


Additional Information

Power Method Battery
Battery Charger Supply (VAC/Hz) 230/50
Battery Type LG 58v Lithium-ion 2.5Ah
Battery Voltage 58v
Battery Capacity (Ah) 2.5Ah
No Load Speed (rpm) 2800.00
Cutting Width (mm) 510mm
Cutting Heights (mm) 30mm to 90mm
Number of Height Settings Central Height Adjuster - 10 Positions
Grass Catcher Volume (L) 65L, Solid ABS With Grass Level Indicator.
Wheel Diameters Front / Back (mm) Front 200mm, Rear 240mm
Assembled Size L x W x H (mm) 1580 x 550 x 980
Charging Time 90 Minutes (Per Battery)
Net Weight (kg) 27.4kg
Battery Lifespan 1000+ charges
Drive Self Propelled
Chassis Steel
Safety Features Operator Presence Control, Safety Key, Lock-out Button
Running Time 35 Minutes
Power Source Battery

Customer Reviews 3 item(s)

Great power! - update
Now needing to use at low cut and with propulsion, battery life is 20 mins, recharge time 45-60. Could do with spare batteries but at £250 for the pair I could buy a petrol mower!
Review by CP, Devon / (Posted on 04/09/2020)
Great power!
Bought this with the strimmer that uses the same battery, I have a 550m2 garden and 150m2 meadow and the grass was long thick and wet after a full winter but it coped very well thanks to the adjustable cut height. Good capacity grass box. I bought a second a charger as it takes a midway charge to complete the 550m2 garden and a path around the meadow - good excuse for a rest!
Review by CP, Devon / (Posted on 29/03/2020)
The best lawnmower I have ever owned. Couldn't ask for anything more. I have a large garden and it worked perfectly. Battery charges quickly, super easy to use. I am more than happy with it.
Review by C.G - Nottingham / (Posted on 21/10/2019)

Write Your Own Review

You're reviewing: Hyundai HYM120LI510 2 x 60V Lithium Ion Cordless Battery Powered Self Propelled Lawn Mower With 2x Batteries and Charger

How do you rate this product? *

1 1 star
2 2 star
3 3 star
4 4 star
5 5 star

Hyundai Power Products

120V Pure Power

Precise Cut

Smart Batteries

65L Grass Bag





Aftersales And Spare Parts


Product Attachments

View FileHyundai HYM120Li510 Battery Lawn Mower User Manual    Size: (1.26 MB)
View FileHYM120Li510 Specification Sheet    Size: (452.56 KB)

Frequently Asked Questions

1. How do you change the cutting height?
You simply use the lever which cycles through the cutting heights in a matter of seconds. Click here to watch our video showing this.

2. Can you get replacement blades for this?
Yes. We have spare parts for all of our machines.

3. Can I fold down the handlebars?
The handles can fold down over the mower for compact storage and transport.

4. Is it hard to assemble?
All of our lawnmowers are quick and easy to assemble out of the box. The manual will give you a simple step by step guide on what to do. We also offer videos on YouTube to help you unbox and set up. Click here to view our YouTube channel.

5. Why do I need different heights on my lawnmower?
You should change the height you cut your lawn depending on the season. 

  • Spring (March / April / May) - Mow once a week on a high to medium height setting.
  • Summer (June / July / August) - Mow twice a week under good growing conditions on a low setting. You should mow once a week in a medium to high setting in dry conditions.
  • Autumn (September / October / November) - Mow once a week on a medium height setting.
  • Winter (December / January / February) - Mow as required on a high setting.

6. Is this mower right for my garden?
If you are not too sure what mower to go for you could take a look at our lawnmower buying guide or speak to one of our experts for some advice.
Call us on 01646 687880 open Monday-Friday 8.30am-5pm.
Online Live Chat

Open on our website Monday-Friday 8.30am-5pm.

7. Does this mower come with a warranty?
Yes. All Hyundai lawnmowers are backed up with a 3 Year warranty. Register online within 30 days to activate your 3 year warranty.

8. Can I remove the grass bag?
Yes. The grass bag is removable.

9. How can I contact you?
Call us on 01646 687880 open Monday-Friday 8.30am-5pm.
Online Live Chat

Open on our website Monday-Friday 8.30am-5pm.

10. What are the benefits of having a battery powered lawnmower?
There is no need to worry about messy petrol 
or mowing over dangerous cables. Advantages of cordless machinery include:

  • Low noise level - Use without disruption to others

  • Emission free - No fumes or pollution

  • Lightweight - Comfortable to use and manoeuvre

  • User Friendly - Easy to use and low maintenance

  • Portable - No cables

  • Convenient - No engine oil required

  • One battery powers the full range - Saving you money

  • Battery life - Designed for 1000+ charges

  • Safety - No flammable petrol and no mains cables

11. Can I use these batteries on other Hyundai battery products?
Yes. All of the 60V/120V Hyundai range uses the same batteries. The range includes:

  • Hedge trimmer
  • Leaf blower
  • Chainsaw
  • Grass trimmer
  • 3 x lawnmowers

12. Is it easy to start?
Yes. Starting the mower couldn’t be easier. You simply have to insert the safety key then push the button and pull back the OPC (operator presence control) lever. As soon as you let go of the lever the lawnmower will stop. It is a safety feature.

13. How do I store it during winter?
With no engine to worry about - storing your cordless lawnmower couldn’t be easier. Simply clean mower of all grass and store in a dry and frost free place.

14. What size lawn is this recommended for?
We recommend this lawnmower for medium to large sized lawns which are 2000sq. ft or above.

15. Do I need to buy the mulching plug and side discharge chute?
No. These are included with your lawnmower so you can use them right away.

16. What is mulching and what are the benefits of it?
Mulching is great for your lawn. The grass being cut is chopped into fine pieces and are deposited back into your lawn. This allows valuable nutrients to enter the soil. You will save time and effort by not having to empty the grass bag and you will also save money on artificial fertilisers (mulching is a great alternative to chemical fertilisers). Your lawn will be healthy and attractive. Mulching will also improve the moisture retention of your lawn so you will not have to water it as often.

Do you have a question regarding this product?

* required fields