Energy Flex 42V ST S18 Lawnmower

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Product Description:

This cordless mower from the Energy Flex family combines the advantages and performance of a classic petrol mower with the clean, quiet, exhaust free operation of a cordless electric motor. The Energy Flex Mower employs the M-Tech power management system to provide power to an advanced brushless induction motor. Featuring load sensing technology, the motor adapts to the cutting conditions, sensing grass thickness and optimises power requirements for the best quality of cut, balancing power and maximising runtimes through intelligent and efficient energy use. The Energy Flex Mower delivers freedom and convenience at the push of a button. 


  • Batteries Included
  • Charger Included
  • WITH LED Battery Charge Status Display
  • Cordless
  • 18" Steel Chassis
  • Cut, Catch and Side Discharge
  • Smartchute® Flap for side discharge
  • Load sensing technology adapts to the cutting conditions
  • M-Tech Power management system -balances power and maximises runtimes
  • Brushless motor technology
  • Push Button Start
  • The Energy Flex® Mowers utilise the same handles, disc system, wheels, catcher and cutting decks as used to equip our Masport petrol models. Therefore, there is no compromise on quality or performance.
  • The M-Tech motor features an industry leading, heavy-duty 22mm steel drive shaft that provides superior strength to tackle those more demanding tasks.
  • A 2 blade disc system delivers superior cutting and catching performance while offering additional protection to the motor.
  • A premium stainless steel blade driver secures the blade disc to the motor shaft.


Please click BUY NOW to purchase online!
Please call us on 03 9794 8339 for a personalised freight quote if you would like delivery.

*This product is offered at a SPECIAL WEBSITE PRICE, which may be lower than the price advertised in store. From time to time the website advertised price will differ from the in store price. This practise allows us to monitor our online marketing campaigns. To take advantage of this great low price please remember to mention the online advertised price when in store at the time of purchase.

Privacy Policy | Delivery Policy
42V ST S18 Lawnmower 42V ST S18 Lawnmower 42V ST S18 Lawnmower 42V ST S18 Lawnmower
Energy Flex 42V ST S18 Lawnmower


  • Batteries Included
  • Charger Included
  • WITH LED Battery Charge Status Display
  • Cordless

Chassis Material: Steel

Cutting Methods: Cut, Catch, Side Discharge

Cutting Width: 460mm (18")

Cutting System: Masport 2 Blade Disc System

Number of Blades: 2

Motor: Batter

Motor Make: Masport M-TECH®

Motor Model: 42Volt 0.75 kilowatt with load sensing technology

Battery Type: Energy Flex Lithium-ion 42V 4Ah

Battery Voltage (volts): 42V

Battery Run Time: Up to 40 mins*

Charge Time (mins): 42V 4Ah - 90 mins

Drive System: Push

Catcher Type: HDPE Plastic

Catcher Volume: 46.5L

Wheel Type & Size: Front 200mm (8") and Rear 200mm (8")

Cutting Height Range: 11mm - 75mm

Cutting Height Steps: 10

Cutting Height Adjustment: Single Point

Weight: 24.8kg

Product Dimensions (W x H x L)535mm x 980mm x 1385mm

*Run times are based on no load

You have the following 4 Options to Buy the Products you are interested in:

Visit One of Our SEVEN Superstores

Would you like to view or take a test drive of our extensive range in person? Then visit us at one of our 7 Superstore locations where a team member can run you through everything and help you find the perfect product to suit your needs.


Buy Online

All of our products can now be purchased through our website. You will currently see a BUY NOW option on most of our products.   When you click this button you will continue to the purchase page where you can quickly and effortlessly complete your order with us (it is a very quick process).  All online purchases offer free store pick up from any of our 7 RedShed Superstores. 

Selected products also offer a flat rate shipping fee.  When available, this option is clearly marked on the product pages.  Alternatively, please call us on 03 9794 8339 if you would like a personalised delivery/ freight quote.  

Important Information for Deliveries - If no one is home at the time of delivery then your order will be left at the front door.  If you would like your order to be left elsewhere please add a note using the purchase page 'order notes' section.  The RedShed uses Delivery Agents to deliver your goods.  You agree that your details, including your Delivery Address, phone number and email address, will be supplied to the Delivery Agent for the purpose of delivering your Goods.

If a product you wish to purchase online does not yet have the BUY NOW option please either call us on 03 9794 8339 or email: and we will activate this product for you.  

* Please click to read our terms of useprivacy and delivery policies.


Email Us

Know what you’re after and want a quick sales process?  Then you can email us your order and we will contact you straight away!
Or, as you are looking through each of our products in detail you will also notice there is a quick enquiry form you can fill out.


Call Us

In the market for a particular product but would like a little more help? Then give your local store a call and a member of our expert sales team will point you in the right direction.


Call 1300 136 572

to get advice and be transferred to your closest store.