Greenworks GD40LM46SP Self Propelled Cordless Lawnmower (46cm, With Battery Charger)

What size lawn can this mower handle on a single charge?

The coverage depends on your battery capacity. With a 2Ah battery, you can mow lawns up to 300m². A 4Ah battery extends this to 600m², whilst a 6Ah battery covers up to 750m². Runtime also varies based on grass thickness, cutting height and terrain. The self-propelled feature helps maximise battery efficiency by maintaining optimal cutting speed.

How does the self-propelled system work?

The self-propelled system drives the large 25cm rear wheels automatically, so you only need to guide the mower rather than push it. This significantly reduces physical effort, especially on slopes or thick grass. The system engages when you squeeze the bail bar and maintains consistent forward speed, making mowing less tiring and more efficient.

Can I use batteries from other Greenworks tools?

Yes, this mower accepts any Greenworks 40V battery including 2Ah, 2.5Ah, 4Ah, 5Ah and 6Ah capacities. The batteries attach via a simple slider mechanism and feature four LED indicators showing remaining charge. This compatibility saves money if you already own Greenworks tools and reduces storage requirements.

What's the difference between the three cutting modes?

Mulching mode finely chops grass clippings and redistributes them as natural fertiliser, eliminating the need for collection. Side discharge ejects clippings to the side, ideal for long or wet grass. Collection mode fills the 55-litre bag for a tidy finish on formal lawns. You can switch between modes without tools to suit different conditions.

How long does the battery take to charge?

The included G40UC5 charger features 5A output for rapid charging. A 2Ah battery charges in 30 minutes, whilst a 4Ah battery takes 50 minutes. The charger includes LED indicators showing charging status and has a removable cable compatible with various socket types. The charge management system prevents overcharging and extends battery life.

Is this mower suitable for slopes and uneven ground?

The large 25cm rear wheels and self-propelled drive make this mower well-suited to slopes and uneven terrain. The wheels provide good traction and stability, whilst the self-propelled system maintains consistent forward momentum uphill. However, always exercise caution on steep slopes and avoid mowing wet grass on inclines for safety.

How do I adjust the cutting height?

The cutting height adjusts via a single lever system with seven positions from 25mm to 80mm. Lower settings create a formal lawn appearance but require more frequent mowing. Higher settings promote healthier grass during dry periods and reduce stress on the lawn. The adjustment mechanism is clearly marked and easy to operate.

What maintenance does this mower require?

The brushless motor requires minimal maintenance as there are no carbon brushes to replace. Clean the deck after use to prevent grass buildup and keep the blade sharp for optimal cutting performance. Check the grass bag for damage and ensure battery contacts remain clean. Store the mower in a dry location and charge batteries regularly to maintain capacity.