Bluemars 40V Cordless Lawn Mower (Blue/Grey, 400mm Cutting Width)

How long do the batteries last and what's the charging time?

The dual 20V 4.0Ah battery system provides up to 60 minutes of continuous runtime, which is sufficient for most medium to large gardens. The charging time varies depending on the battery level, but typically takes 2-3 hours for a full charge. Two chargers are included so you can charge both battery packs simultaneously, ensuring minimal downtime between mowing sessions.

What cutting heights are available and how do you adjust them?

The mower offers six cutting height positions ranging from 25mm to 75mm. Height adjustment is controlled centrally through a single lever mechanism, making it quick and easy to change settings without tools. This range accommodates different grass types and seasonal requirements, from close summer cuts to higher winter settings that protect grass roots.

Is assembly required and how difficult is it?

Yes, some assembly is required, but it's straightforward and typically takes 15-20 minutes. The main components that need assembly include attaching the handle, installing the grass collection bag and connecting the battery system. All necessary tools and clear instructions are provided. Most users find the assembly process simple with no technical expertise required.

How does the brushless motor compare to standard motors?

The brushless motor offers several advantages over traditional brushed motors. It provides higher efficiency, resulting in longer battery life and more consistent power output. Brushless motors also generate less heat and noise whilst requiring significantly less maintenance since there are no carbon brushes to wear out. This translates to a longer motor lifespan and more reliable performance over time.

What's the maximum lawn size this mower can handle?

With the 60-minute battery runtime and 400mm cutting width, this mower can effectively handle lawns up to approximately 400-500 square metres on a single charge. The actual coverage depends on grass conditions, cutting height and terrain. For larger areas, the dual battery system allows you to swap batteries and continue mowing without waiting for charging.

Does the mower work well on slopes and uneven terrain?

The mower handles gentle slopes and slightly uneven terrain effectively thanks to its stable four-wheel design and balanced weight distribution. However, it's not recommended for steep inclines or very rough terrain. The rear roller helps maintain consistent ground contact on mild undulations, ensuring even cutting performance across varied lawn surfaces.

How often does the grass bag need emptying?

The 40L capacity grass bag typically requires emptying 1-2 times for average-sized lawns, depending on grass length and density. For longer grass or spring growth periods, you may need to empty it more frequently. The large capacity is designed to minimise interruptions during mowing sessions, allowing you to complete larger areas before disposal is necessary.

What maintenance is required for this mower?

Maintenance requirements are minimal due to the brushless motor design. Regular tasks include cleaning the cutting deck after use, checking blade sharpness periodically and ensuring battery terminals remain clean. The blade should be sharpened or replaced annually depending on usage. No oil changes or spark plug maintenance are required unlike petrol mowers, making this a low-maintenance solution.