Black and Decker CLM3820L 36v Cordless Rotary Lawnmower 380mm

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Item Id :20988145

Rating  Overall Rating 4 stars  (43) read review(s)

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Black and Decker CLM3820L 36v Cordless Rotary Lawnmower 380mm

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Battery AH Explained

The best way to describe battery amp hour is that this is effectively the size of your fuel tank, the more amp hours your battery has then the longer the battery will last between charges. More amp hours does not increase the power of a given tool.

Battery Voltage Explained

A tool with a higher voltage than another is a bit like choosing an engine in a car, the higher voltage will generally mean higher power & performance. As with cars though a bigger engine does not always translate to better performance so it is important to compare the specifications of tools at different voltages between different manufacturers.

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Read 43 Customer Review(s) for Black and Decker CLM3820L 36v Cordless Rotary Lawnmower 380mm

Overall Rating
Overall Rating 5 stars
Value for Money
Overall Rating 5 stars
Features
Overall Rating 5 stars
Performance
Overall Rating 5 stars
Build Quality
Overall Rating 5 stars

CHAZ 09/05/2018 18:29:40

This cordless lawnmower is pretty cool. Way less palava than using extension leads. And it's plenty powerful enough. Cheap shipping too

Overall Rating
Overall Rating 4 stars
Value for Money
Overall Rating 4 stars
Features
Overall Rating 4 stars
Performance
Overall Rating 4 stars
Build Quality
Overall Rating 4 stars

Ed 06/05/2018 20:09:08

I bought this lawn mower as I have quite a long garden and really didn't want to be traipsing a huge extension cable around the garden and constantly tripping over it, so a cordless is very appealing. Also I already have a cordless B&D strimmer which I was very impressed with and the battery pack is compatible with this lawn mower, so that's a bonus. Delivery was excellent, next day, on time as promised. The mower is pretty solid, not cheap and flimsy in anyway, cuts well with an adjustable blade height and has a decent size grass collector. Simple to assemble and use. I didn't find the weight an issue it pushes along just fine, and you can just rock it back a little to get over any bumpy bits. So no issues there. A few years ago the idea of a battery powered lawn mower might have raised a few laughs, but this does the job. I was a bit concerned that the battery might struggle in the long grass, but overall it's performed admirably. It went through wet 6 inch grass fine and only bogged down when the collector was full and compacted. I'm sure that a small garden could be done on one charge. My rather large garden took 2 charges with a bit of power to spare and that was from a pretty unkempt starting point. One thing that I noticed is that the battery gets pretty hot in the lawn mower, much more than it does in the strimmer, (bigger motor and a proper blade to spin round, so no surprise there) but it does mean that you have to let the battery cool down quite a bit before you can recharge it, as the charger will indicate when the temperature is too high. So I'll be buying a spare battery so that I can do the whole lot in one go next time. Other than that I'm impressed. It does exactly the job I bought it for with none of the hassle of a petrol or corded mower.

Overall Rating
Overall Rating 4 stars
Value for Money
Overall Rating 4 stars
Features
Overall Rating 5 stars
Performance
Overall Rating 4 stars
Build Quality
Overall Rating 4 stars

Mr 27/10/2017 11:06:40

I bought this lawnmower to compliment my B&D 36 volt strimmer and hedge cutters which are both excellent and would recommend. When my petrol lawnmower needed replacement I thought I would try the B&D lawnmower. The build quality is reasonably robust, and the batteries and chargers are compatible with the strimmer and hedge cutter. So all are swappable. As it is near the end of the grass cutting season,the lawnmower has not had much use; but so far so good.

Overall Rating
Overall Rating 4 stars
Value for Money
Overall Rating 4 stars
Features
Overall Rating 4 stars
Performance
Overall Rating 4 stars
Build Quality
Overall Rating 4 stars

David 16/03/2016 16:22:04

Great service. Ordered yesterday (15th march), was given a delivery slot for today (16th march) between 13.15 - 14.15, and it arrived 13.10. We put it together and used it within 1 hour. We have a large garden, it cut well and battery just lasted the 30 mins.

Overall Rating
Overall Rating 4 stars
Value for Money
Overall Rating 4 stars
Features
Overall Rating 4 stars
Performance
Overall Rating 4 stars
Build Quality
Overall Rating 4 stars

S 06/08/2015 15:41:49

I waited a while to review to give better feedback: firstly the advantages of mowing without a cord or the maintenance of petrol are huge. I think this will be the way to go for garden tools. The power is now quite acceptable for domestic use and can only improve. whilst the technology is still relatively new, this does a very good job at filling most requirements, except that the battery struggles at times and the total weight is a little high. why the latter i'm not sure other than build quality, which seems very good. It's lighter than petrol but heavier than a hover machine. so far each time has been point and go, easy to manoevre, easy to recharge and raise and lower to suit the grass. Cuts well and leaves a stripe. Also the collecter is robust and well fitting. so, if the weight was lowered a touch (for easier lifting) and a battery arrangement possible so that two could be used together for tough situations, i would give this 5 stars.

Overall Rating
Overall Rating 1 stars
Value for Money
Overall Rating 1 stars
Features
Overall Rating 3 stars
Performance
Overall Rating 1 stars
Build Quality
Overall Rating 1 stars

Peter 19/06/2020 16:01:46

Product faulty on arrival. Intermittent electrical fault - works then stops then works then stops. Awaiting response to problem from Tooled UP. Asked for pictures - of an electrical fault!. Instructions very poor - had to watch a video on youtube to work out how to assemble the product. Lots of plastic - not sure how robust the mower is nor how well or otherwise the batteries work. Only good point so far is the cut height adjustment which is very easy.

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For any technical enquiries relating to this product it is best to call the manufacturer, Black and Decker, direct on 0330 808 0719.

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