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Yard Force LM C37B 40V Cordless Lawn Mower (37cm, 2 x 20V)

Yard Force LM C37B 40V Cordless Lawn Mower (37cm, 2 x 20V)

Cordless Battery Lawn Mower

From: Yard Force

The 40V 37cm Cordless Lawn Mower from Yard Force runs on two 20V 4.0Ah batteries for a combined 40V output. It's built for medium-sized gardens and cuts a 37cm width with a steel blade. The brushless motor gives better efficiency and longer battery life than standard motors.

Front and side combs guide grass towards the blade for a clean edge finish. Torque Sensing Boost technology adjusts power automatically when the grass gets thicker, so cutting stays consistent.

Seven cutting heights range from 25mm to 75mm, adjusted with a simple push mechanism. A 40L grass bag collects clippings, or switch to the mulching plug instead. The rear roller presses the lawn for a striped finish and handles fold flat for storage.


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Product Features

Dual Battery Power - Two 20V 4.0Ah batteries combine for 40V output. This gives longer run time than a single battery setup, so larger lawns get finished in one session. Batteries are shared across the CR20 Range, meaning one set works with other Yard Force garden tools too. Brushless Motor - Unlike motors with carbon brushes, a brushless motor has fewer moving parts that wear down. This means less friction, more efficient power use and a battery charge that goes further. It also tends to run quieter and last longer overall. Torque Sensing Boost - This technology monitors the blade load and adds extra power automatically when grass gets thick or long. Instead of manually adjusting speed, the mower does it for you. Result: a more even cut without stalling in tougher patches.
7 Cutting Heights - The Push & Adjust system offers heights from 25mm up to 75mm across 7 positions. Short for a neat finish in dry weather, or longer to protect roots during summer heat. One lever changes the whole deck height at once. Rear Roller - Fitted behind the cutting deck, the roller presses grass as the mower passes over it. This creates the classic light and dark striped pattern seen on formal lawns. No extra attachment needed, it's built into the design. Collection Options - Choose the 40L grass bag for a tidy finish with no clippings left behind. Or fit the mulching plug instead, which returns cut grass to the soil as a natural fertiliser. Switching between the two takes seconds.

FAQs

What is the cutting width and what height settings are available?

The 40V 37cm Cordless Lawn Mower has a 37cm steel blade with a cut-to-the-edge design. This means you can get close to borders and fences without leaving a strip of uncut grass. There are 7 cutting heights to pick from, ranging from 25mm to 75mm. You adjust these using a Push & Adjust system, so no tools are needed. Short grass in spring? Set it low. Longer grass or dry weather? Raise it up. This range covers most lawn conditions throughout the year.

How does the dual battery system work and how long will it run?

This mower uses 2 x 20V 4.0Ah batteries that combine for a 40V output. One customer with a fairly large lawn reported the battery "lasts perfectly" and cuts the whole area in one go. Another customer noted that with 2 batteries it "doesn't last too long" when used heavily. Actual runtime depends on grass length, moisture and how often you mow. Both batteries are part of the Yard Force CR20 Range, so they can be swapped with other compatible CR20 garden tools if you own them.

Is this mower suitable for a small garden or a larger one?

The 37cm cutting width and brushless motor make this a good fit for small to medium gardens. One reviewer said they have "a fair size lawn" and it "cuts the whole lawn very easily." Another mentioned using it on roughly half of a 20m x 10m lawn in one charge. If your lawn is much larger than this you may need to recharge or swap batteries partway through mowing.

What's the difference between using the grass bag and mulching?

You get two collection options with this machine. The 40L grass collection bag gathers clippings as you mow, which is handy if you want a tidy finish straight away with nothing left on the lawn. The mulching plug instead chops clippings finely and returns them to the soil. This can feed nutrients back into the lawn over time, though it does leave the clippings on the grass rather than collecting them. Both fit the same mower, so you can switch depending on the season or how long the grass is.

Does it leave stripes on the lawn like a traditional mower?

Yes. There's a rear roller fitted, which presses the grass down as you mow in opposite directions on each pass. This is what creates the classic light and dark striped pattern you see on football pitches and formal lawns. It's a feature not all cordless mowers include, so it's worth noting if you want that finished look rather than just cut grass.

How heavy is it and will it be easy to store?

The mower weighs 14kg and measures 68cm long, 44cm wide and 32cm high. One reviewer said it felt "slightly heavier than our old mower" but added that it "runs so smoothly you don't really notice." For storage, the handles fold down, which reduces the overall footprint. This is useful if you keep it in a shed or garage with limited space.

Does it need assembly and is it straightforward?

Yes, some assembly is required when it arrives. Based on customer feedback, this isn't complicated. One reviewer called it "easy to assemble and use" and another said it was "easy to put together." You'll need to attach the handles and fit the grass collection bag or mulching plug before first use. No tools beyond what's included should be needed.

Are there any known issues to be aware of before buying?

Most feedback is positive, with a 4.1 star rating from reviewers. The brushless motor and Torque Sensing Boost technology were praised for cutting power that one user said matched a corded mower. However, one customer reported a problem with the rear roller's plastic clip splitting after use on a 20m x 10m lawn used at 50% capacity. They noted this particular model may have limited replacement parts available if you need one, so it's worth checking part availability with Yard Force directly if this is a concern. Overall, most users found it reliable with no complaints about build quality.

Yard Force LM C37B 40V Cordless Lawn Mower (37cm, 2 x 20V) Specs

40V 37cm Cordless Lawn Mower Specs

The Yard Force 40V 37cm Cordless Lawn Mower (model LM C37B) is a battery-powered mower designed for efficient lawn care in medium-sized gardens. It uses a dual battery system with two 20V 4.0Ah batteries providing a combined output of 40V and is compatible with the Yard Force CR20 Range of garden tools. The mower features a brushless motor that offers efficiency, power and extended battery life. It also incorporates Torque Sensing Boost technology, which automatically adjusts power to optimise cutting performance. The cutting system includes a 37cm steel blade with a cut-to-the-edge design enhanced by front and side combs that guide grass efficiently for a clean cut. The mower offers seven adjustable cutting heights ranging from 25mm to 75mm, controlled via a push and adjust system. Users have the option to collect grass clippings in a 40-litre bag or use a mulching plug. Additional features include a rear roller that creates classic stripy lawn patterns. The handles fold for compact storage. The mower's dimensions are 68cm in length, 44cm in width and 32cm in height. It weighs 14kg and is made primarily from plastic with an orange finish. The product requires assembly and is manufactured by Sumec in China.
Specification Details
Product Name Yard Force 40V 37cm Cordless Lawn Mower
Model Number LM C37B
Brand Yard Force
Power Source Battery Powered
Battery Configuration 2 x 20V 4.0Ah
Combined Battery Output 40V
Compatible Battery Range CR20 Range
Motor Type Brushless Motor
Motor Features Efficiency, Power, Longer battery life, Torque Sensing Boost technology
Cutting Width 37 cm
Cutting Blade 37cm steel blade with cut-to-the-edge design
Cutting Height Positions 7
Cutting Height Range 25-75 mm
Cutting Technology Front and side combs guide grass efficiently
Operation Mode Automatic
Grass Collection Options 40L grass collection bag, Mulching plug
Rear Roller Included for striped lawn finish
Handle Foldable for compact storage
Dimensions (L x W x H) 68 x 44 x 32 cm
Weight 14kg
Material Plastic
Colour Orange
Number of Items 1
Assembly Required Yes
Country of Origin China
Manufacturer Sumec
Manufacturer Part Number LM C37B
Operation Automatic
Max Adjustable Cutting Height 75 mm
Min Adjustable Cutting Height 25 mm
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