Vax CLSV-B4KS OnePWR Blade 4 Cordless Vacuum Cleaner, Graphite

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Removable ONEPWR Battery

The VAX Blade 4 comes with a revolutionary new 4.0Ah battery that gives you up to 45 minutes runtime, plenty of time to clean without recharging.

Every ONEPWR Battery fits every ONEPWR product.

Blade 4 Hotspots

Intelligent vacuuming

VAX Blade 4 is controlled by VAX Core Technology, continually monitoring power to maximise cleaning efficiency & performance.

Cleaning performance of the best corded uprights with no compromise**

Whole home cleaning

Vax Blade 4 the cleaning performance of the best corded uprights & the freedom of a cordless vacuum.



3 stage filtration technology ensures that even the smallest particles of dust are captured in the dirt bin. Capturing up to 99.8% of particles.

No loss of suctionΔ

No loss of suction

Vax Blade 4 maintains constant high pick-up performance even when the dirt bin is full or the battery is low.

Lightweight and Innovative Design

Lightweight and innovative

At just 3.1kg, VAX Blade 4 is perfectly balanced for effortless, easy to use cleaning.

Boost mode

Boost mode

Up to 3x the power at the touch of a button giving you the very best cleaning performance, when you really need it.

DustTracker LED Headlights

DustTracker LED headlights

With the DustTracker LEDs you can easily see where you need to clean, so there is nowhere left for the dirt to hide.

Removable bin

Removable bin

Simple, hygienic and easy emptying.

Shop the Vax ONEPWR Blade range


Vax Blade 4

Vax Blade 3

Vax Blade 3

Vax Blade 3 PET

Vax Blade 3 Pet


Vax Blade 3 Pet Dual Batt


Vax Blade 4


Vax Blade 4 Pet


Vax Blade 4 Pet Dual Batt

up to 45 mins up to 40 mins up to 40 mins up to 80 mins up to 45 mins up to 45 mins up to 90 mins
No loss of suction
Yes Yes Yes Yes Yes Yes Yes
LED Dustracker Headlights
Yes Yes Yes Yes Yes Yes Yes
Vax Core Technology
Yes Yes Yes Yes
Brushless Motor
Yes Yes Yes Yes
Dustvault 3 stage – 99.8% Dustvault 3 stage – 99% Dustvault 3 stage – 99% Dustvault 3 stage – 99% Dustvault 3 stage – 99.8% Dustvault 3 stage – 99.8% Dustvault 3 stage – 99.8%
Suitable for homes with Pets
Yes Yes Yes Yes
Antimicrobial Brushbar
Yes Yes Yes Yes
Motorised Pet tool
Yes Yes Yes Yes Yes
3.1kg 3.1kg 3.1kg 3.1kg 3.1kg 3.1kg 3.1kg
0.6L 0.6L 0.6L 0.6L 0.6L 0.6L 0.6L

Weight: 4.46 kg
Dimensions: 18.5 x 28.5 x 72.5 cm; 4.46 Kilograms
Brand: Vax
Model: CLSV-B4KS
Colour: Graphite
Colour: Graphite

131 Responses

  1. Anonymous says:

     United Kingdom 🇬🇧

    You’re wondering if this is good for hoovering up the massive house spiders aren’t you? Look no further, this thing is an absolute beast, set it to the higher suction mode and it will instantly suck up any size spider you point it at.

    It’s brilliant for other hoovering too but let’s be honest you just want it for spiders. 😉

  2. Anonymous says:

     United Kingdom

    Best hoover and I was prof cleaner for 15 years. Especially power head I love my little friend thank you
    It makes me happy

  3. Anonymous says:

     United Kingdom

    Be careful on laminate floor as it can damage the laminate

  4. LucasFinnis says:

     United Kingdom

    Only just received but it has already rejuvenated the carpet. Excellent suction, I didn’t realise how bad my old vacuum had become.

  5. Anonymous says:

     United Kingdom

    This is a great hover you will not be disappointed

  6. ShaunaCockram says:

     United Kingdom

    For the price the vac CLSV-B4KS cordless vacuum cleaner is a little beauty it has good suction battery is easy to charge nice and portable can even get right under the bed and wow the dust it can find under there no need to move bed result
    Would definitely recommend this vax

  7. Anonymous says:

     United Kingdom

    Has much better suction than previous dyson and has more than enough battery to do my whole house. Not the lightest but not too heavy and still easy to use.

  8. Anonymous says:

     United Kingdom

    This is the best rechargeable vacuumed we have had.easy to use throughout the house on carpets and hard floors. The only small down is that my wife finds it quite top heavy, this is a small fault on a great machine.

  9. Anonymous says:

     United Kingdom

    The Vax cordless PWR Blade 4 is fantastic! I was a little reluctant to purchase a battery operated vacuum cleaner, thinking that it couldn’t possibly have the same suction power as an electric one to the contrary! It’s incredible how much dust this vacuum can tackle! It’s light and very easy to assemble and disassemble, in order to clean. I love the the light feature when you use the roller brush, which enables you to see beneath furniture, such as a bed or a sofa. All in all, I highly recommend it, however, I would recommend purchasing another battery for a bigger property – let’s say a three bedroom – as the battery runs out fairly quickly, most certainly if higher power is necessary for deeper cleaning.

  10. ChristineBoatma says:

     United Kingdom

    The machine definitely does what it claims, which is to vacuum up dirt from the floor and from carpets. It has enough controls to ensure a good performance on both smooth floors and carpets. It’s quite powerful and the battery lasts very well in our typical pattern of use (a one-storey flat). It comes with a clip arrangement that one can attach inside a cupboard, so storing the machine is efficient.

    It was heavier than I expected, and the dirt container is quite small so needs emptying quite frequently. The emptying is a bit fiddly, and I managed to drop the dirt container when I started using it, but one gets used to it. It is hard to say how long the rigid plastic of the container will last – just don’t drop it on a hard floor! When you want to stop using it for a short time, for example to move furniture, you find that you can’t stand it up or reliably lean it against a wall etc. To rest it, you have to lie it horizontally on the floor, which seems awkward. Still, it’s proved much more convenient than my previous wired cleaner, which was of good quality and powerful, but a pain to drag around and keep plugged in. So, recommended.

  11. ClayFikesznzna says:

     United Kingdom

    Excellent all rounder except for battery life.The manufacturers say you can clean the whole house on one charge …maybe if you don’t use the plus butto

  12. Anonymous says:

     United Kingdom

    I like the design and functionality. It is lightweight. I was able to vacuum the whole house, with plenty of battery power remaining.

  13. Anonymous says:

     United Kingdom

    Best hoover I have used great for around a small new build house. Brilliant on my stairs carpet when you take the attachment off and have a small hand held for each step plus the turbo button for carpets is a great feature. Overall very pleased will never buy an upright agai

  14. Keagen Grace says:

     United Kingdom

    Firstly, it is important to say that in the main we have been really pleased with this Vax PWR blade 4 and are glad we purchased it. We have had it for about 18 months now and in terms of convenience and ease of use in normal operation (for a quick vac all around the house or in one particular room) it is really good. However, we also have a ‘Hetty’ (Henry) type vacuum too and I think we would struggle if we didn’t have both. We have found a few drawbacks with the Vax:
    1a. Brush bar – gets clogged very quickly (at least in our house) – I have my wife two daughters and a springer spaniel and it seems I am forever removing the brush bar because it gets quickly clogged with hair, bits of cotton / string etc and if you don’t deal with this regularly the brush bar stops picking up and eventually jams.
    1b. Brush bar and 3 year warranty issues – also the brush bar started making some very bad noises and had to be replaced – we had the ‘3 year’ extended warranty so I thought it would be free of charge but when you read the small print the 3 years warranty only covers the ‘main unit and not accessories’ – Vax counts the brush bar as an accessory (which I was very frustrated at because clearly it is not an accessory and is integral to the vacuum) and despite the fact it was just a few days out of its one year warranty Vax were unprepared to replace it for me so buying one from them wasn’t cheap – really disappointed with Vax on this one
    2. Poor hand held Vacuum – despite how it looks on the video, I was really disappointed at how difficult it is to turn the normal vacuum into a hand held ‘dust buster’ type vacuum (it is quite stiff and difficult to pull apart – you have to wrestle with it and use quite a bit of force) and then how poorly it performs when you do. I have tried it around the house a few times (to get the collecting dust off bit of carpet next to skirting board that the vax with brush bar doesn’t seem to get) and in the end I find it easier to lug out the Hetty than use the Vax for this. Also when buying this I had one eye on being to easily and quickly vacuum the car – tried it a few times but reverted back to our Hetty vacuum because it was so difficult to do and didn’t do a very good job
    3. High power drains charge. Battery life is excellent on normal power, but if you use it on high power then it drains very quickly – high power is really great in terms of suction but you would have to move quickly to vacuum a whole house on this setting
    4. Constant emptying – we have had to get in the habit of emptying the vacuum every time we use it as it does not have much capacity at all and soon gets full. The dust collector unit is quite easy to remove but the dust and debris doesn’t often simply ‘fall out’ so you need to be prepared to pull at the fluff etc or take the top bit off and remove the centre section which then gets a bit faffy. Replacing the dust collector can be a bit tricky at first but once you get the hang of it usually happens quite easily.
    As I say, we are generally pleased but be aware of those issues before you buy

  15. Anonymous says:

     United Kingdom

    Chuffed with this battery vacuum, good suction, decent battery life and a very competitive price.

  16. EwanVieraf says:

     United Kingdom

    Bought for my Mum liked it so much I bought one too!

  17. Anonymous says:

     United Kingdom

    Good Hoover. I find it a bit on the heavy side. Not as lightweight as dyson. Suction is good and brings pile up on carpets.

  18. Anonymous says:

     United Kingdom

    I love this hoover it’s lightweight ,good battery life and easy to clea

  19. Anonymous says:

     United Kingdom

    Just fantastic! A* in every respect!

    Just wish I’d bought one before, since Vax 4 blade is so easy to action, even though I am over 70!!!

  20. Anonymous says:

     United Kingdom

    Great suction, easy to empty, hangs on the wall out of the way, brilliant for the car, quick battery charger..excellent vac!

    Better than my dyson!

  21. Katie Hale says:

     United Kingdom

    This replaces my dyson and is the best hoover I have owned can’t find the words to express this enough

  22. RNLBrittny says:

     United Kingdom

    Neat and efficient little cordless vacuum. Only used it 4 or 5 times since purchase but happy with it. Great feature that it can be dismantled easily for hand held use eg stair carpets. Battery charge sufficient for 3 bed house although we have wooden hallway downstairs. Wall mount facilitates neat storage .

  23. Anonymous says:

     United Kingdom

    The vax is very light & the battery life is better than expected. I especially like the lack of bags, just tip out the simple container easily.

  24. Anonymous says:

     United Kingdom

    After buying a cheap Hoover my daughter took it back so I bought her this one as I’ve wanted one myself. She was amazed buy the suction and couldn’t believe how much dust it got out. So easy to empty too.

  25. Josh Levenson says:

     United Kingdom

    I have been using a Dyson but it was not very good picking up bits. This one is far superior , more powerful, had a light on front which is super for seeing in corners. Very impressed

  26. Anonymous says:

     United Kingdom

    Definitely needs boost mode for carpets otherwise great for tiled floors.

  27. Anonymous says:

     United Kingdom

    Had trouble carrying my old vacuum cleaner upstairs and this one is just a perfect weight. Also not having to plug it in while moving from room to room is a godsend.

  28. Anonymous says:

     United Kingdom

    Very easy to use and good manoeuvrability, the light a bonus, easy to empty, also enough time to clean on battery. Very pleased with it.

  29. Anonymous says:

     United Kingdom

    Suction not great and battery does not last 45 mins. Useful but there are better cordless models.

  30. enco9650 says:

     United Kingdom

    Really pleased with this. So much easier to use than that Dyson ball vac we had before. There suction power is impressive. The detachable battery means we don’t need to keep the whole unit near a power point, just the battery.

  31. Lori says:

     United Kingdom

    I’ve been using this Vax for a good few months and have been very impressed with it. I’ve owned several vacuums including the Dyson V8 cordless. The Dyson was great, to begin with, but quickly lost suction power and the battery died too fast.

    The suction power of this Vax is excellent and I love the main cleaning head as it works well on both carpet and hard flooring. Unlike the Dyson V8, this had an independently controlled roller brush that once switched on allows the vacuum to glide over hard flooring. This option also turns on the front LED headlight which helps massively to see dust and debris that would otherwise be invisible in normal light.

    The second thing I love about this vacuum is the removable battery and separate charging cradle. It means I have never run out of juice as I did with Dyson. This lasts anywhere between 30 to 45 mins depending on suction mode.

    In term of handling, this design of this vacuum takes a little getting used to. It seems heavier to handle compared to the Dyson, even though they’re similar in size.

    One thing that seems to never get mentioned is the easiness of cleaning. This is easier than Dyson to empty and clean. Dust would always get stuck in the Dyson and I’d have to get my hand in to remove it. On the Vax, just open the flap, empty, done.

    Overall, this is as close to the perfect cordless vacuum cleaner you will get. I love it! Much better than the Dyson V8!