Black+Decker BCMW3336N Cordless Lawn Mower (33cm, 36V, Bare Tool)

Does this lawn mower come with a battery?

No. This is a bare unit sold as "36v Compact Mower Only". You won't find a battery or charger in the box. The mower runs on BLACK+DECKER's 36V battery platform, so if you already own other 36V BLACK+DECKER tools such as a strimmer or hedge trimmer, you can use the same battery across all of them. If you're starting from scratch you'll need to buy a 36V battery and charger separately. Several buyers who already owned BLACK+DECKER kit mentioned this made the purchase more cost-effective since they didn't need to pay for a battery twice.

What size lawn is this suitable for?

BLACK+DECKER recommend it for lawns up to 250m². That's roughly the size of a tennis court. It's built as a compact mower rather than a heavy-duty garden machine, so it suits smaller or medium gardens well. A couple of reviewers have gone beyond the official recommendation though. One user reported cutting 350m² using two 2.5Ah batteries and another managed 300m² with the same battery setup. So while 250m² is the official figure, the mower can handle a bit more if you've got spare batteries on hand.

How do I adjust the cutting height?

There's a height change lever located on the wheel axle. It gives you 5 cutting height positions ranging from 25mm to 65mm, so you can go from a close trim to a longer cut depending on the season or how your grass is growing. Some reviewers found the lever a little fiddly to use at first and a few said the instructions weren't entirely clear on this point. If you're unsure, checking a quick video guide online can help, as one buyer mentioned doing exactly that.

How much does the mower weigh and is it easy to store?

It weighs 13.62kg. That's light enough to pick up with one hand according to one reviewer, which makes it easy to manoeuvre around tight corners or awkward spots in the garden. Its compact 33cm deck size also means it doesn't take up much room in a shed or garage when not in use.

What is the cutting width and what blade does it use?

The cutting width is 33cm. It uses a winged steel blade designed to maximise grass collection as you mow, rather than just cutting and dropping the clippings. The mower body is made from alloy steel, which keeps the overall build reasonably robust while still being lightweight enough to carry.

How big is the grass collection box and are there any issues with it?

The collection box holds 35 litres, which should reduce how often you need to stop and empty it compared to smaller boxes. That said, it's worth knowing that a couple of reviewers reported problems with the box design. They mentioned the angle of the box can let grass fall back into the cutting mechanism, causing it to clog and requiring you to stop every few metres to clear it out. This wasn't a universal experience though. Most other reviewers didn't report this issue and found the collection worked fine for regular lawn maintenance.

What warranty does this mower come with?

It comes with a 2 year manufacturer warranty from BLACK+DECKER. This covers the mower itself. Since the battery is sold separately, check the terms of whatever battery you purchase separately as it may carry its own warranty period.

How long does the battery last and does grass length affect performance?

Battery life depends on which battery you pair it with and how long your grass is. Several reviewers noted that letting the grass grow too long before cutting puts more strain on the mower and drains the battery faster. One buyer said they could cut both their front and back garden on a single charge when the grass was kept well maintained. For larger areas or overgrown lawns, having a spare battery is a sensible option, as mentioned by multiple reviewers. On the highest cutting setting, one user also noted the cut came out shorter than expected, so it's worth testing the settings on a small area first if you want to avoid cutting too close.