Cobra S3840V 38cm (15in) Cordless Battery Scarifier & Aerator, ideal for clearing lawn debris and improving its health, 40v 5Ah

(10 customer reviews)


  • 2 IN 1 – Scarifier and Aerator interchangeable drums included. Improve the health of your lawn by removing moss, debris and promote stronger grass growth.
  • 5 DEPTH SETTINGS – 38cm (15in) working width, ideal for small to medium lawns, The simple height dial lets you select between 5 operational heights -10mm to 5mm so you can easily adjust for the application
  • 45L CAPACITY COLLECTION BOX – Collect rather rake the moss and debris – simply fit the 45L collection box to pickup lawn debris. There’s power remaining indicator on the handle. Two-stage safety start ensure safe operation
  • COMPACT, EASY STORAGE – The quick release handles allow for handles to fold easily for compact storage. The height of handles can also be adjusted to suit the operator.
  • POWERED by a 40V 5Ah (Samsung cells) battery for longer run time. Battery and charger included. 2 Year warranty (domestic use) included
SKU: B086Q2SD1J Categories: , ,


The Cobra S3840v is a 2 in 1 scarifier and aerator powered by a 40v battery system, offering plenty of power. Easily switch between modes, change operating heights and the angle of the handles to suit the operator. The S3840v has a working width of 38cm (15in) and is ideal for removing thatch, moss and generally improving the health of your lawn. Use the aerator module to improve drainage and improve root development, but is also excellent for preparing the lawn for over-seeding. The battery (40v 5Ah Samsung cells) and charger are included.

Additional information



Date First Available

1 April 2020



10 reviews for Cobra S3840V 38cm (15in) Cordless Battery Scarifier & Aerator, ideal for clearing lawn debris and improving its health, 40v 5Ah

  1. Charles Mark Addison

    BrilliantFirst class kit

  2. Amazon Customer

    Not as good as expectedFirstly the assembly instructions could be written more clearly, secondly the battery run life is no more than 30 minutes and thirdly the poor quality rubber cushion handle cover has started to break/split after two uses. Overall it does what is says but there’s room for improvement.

  3. Brocher

    Instructions and performanceInstructions could be very much clearer especially for fitting the net bag. There are two springs included but no indication for their purpose. We contacted Cobra but they were equally mystified. The solution suggested was not correct.However, it was very easy to change the rotovator blades to the scarifier tines. The machine did exactly as expected and the battery charged quickly and lasted well – at least 21/2 hours

  4. Mr G S Brown

    Aftersales service12 months on the battery was defective but they sent a replacement straight away. Brilliant service well happy…

  5. Mr C.

    Great quality machineGreat quality machine that achieves excellent results. The battery slots in easily and lasts over half an hour – longer when having to stop and empty the bag. It is essential to get the height adjustment correct or it takes too much at one go. Very effective at removing moss. Obviously, the more moss you have in your lawn the barer it will end up!

  6. many

    Good only for one year.Good for the first year. This year does not turn on despite the battery is fully charged. I have also noticed that the wire to keep it turned on is almost broken. I am not buying this brand anymore.

  7. Marcella

    Cobra Cordless ScarifierWe bought this cordless scarifier to replace our electric one and we are very pleased. It is easy to manoeuvre and does brilliant job. After watching how to properly scarify lawn on youtube, we have decided not to use bag and to rake it instead. Battery fully charged lasts about an hour. We highly recommend this scarifier.

  8. sue&ron

    Fantastic Scarifier and great customer service.Great product. No more back breaking work with the rake. Easy to use, lightweight and the battery lasted me well over an hour. So impressed that I have just ordered a Cobra battery operated lawnmower. Fantastic service from Country Gardening who, despite Covid19, managed to deliver within 48 hours to the Scottish Highlands and did not charge me for delivery…. Very refreshing.

  9. Feorlean

    Excellent scarrifier and batteries hold a good charge.Used to clear a lawn of dead moss – it is quite a large area and required several days work, but it was the right tool for the job.

  10. J W Matlock

    Works very wellIt was exactly as described: lightweight, powerful and efficient. And, in spite of what other reviewers have said, I found it very easy to assemble.

Add a review

Your email address will not be published. Required fields are marked *