★ Tip: 2-in-1 vac 7.5 / 10 · Editorial score

Editorial rating based on manufacturer specs and Amazon catalogue data. We do not trial products ourselves. How we rate

Bosch Flexxo Gen2: The 2-in-1 cordless vacuum for the small flat

Prices in euros from Amazon.de, as of 11 June 2026. Prices and availability may differ on Amazon.co.uk.

By Seydhan Cakmak · Editor-in-chief · Updated: · AI-translated from the German original

The Bosch Flexxo Gen2 solves two typical everyday problems of small flats at once: the accessories (crevice tool, furniture brush and upholstery tool) sit right in the unit and are always to hand instead of getting lost in a drawer. And it stands freestanding, so you don't have to drill a wall bracket. As a 2-in-1 model it turns into a compact handheld vacuum for the sofa, stairs and car with one movement. Bagless with a washable filter, from one of the most trusted brands.

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Bosch Flexxo Gen2 Series 4 (BBH3K2801)

⌗ Available variants

Bosch Flexxo Gen2 Series 4 at a glance

In short: the Bosch Flexxo Gen2 Series 4 scores 7,5/10 in our cleaning review (from €159). Biggest strength: accessories built in. Main compromise: battery not replaceable.

All specifications come from manufacturer data sheets and the Amazon catalogue and were cross-checked before publication. The rating is an editorial overall assessment based on this data; we do not trial products ourselves.

Bosch Flexxo Gen2 Series 4: what works and what doesn't?

What works well

  • Accessories built in: Crevice tool, brush & upholstery tool sit in the unit, no more searching
  • Freestanding: Stands without a wall bracket, no drilling in a rented flat
  • Bosch brand trust: Good spare-parts supply, solid build quality
  • 2-in-1 convertible: One movement turns it into a handheld for the sofa, stairs, car
  • Power floor nozzle with LED: Lights up dust under furniture and in dark corners

Points of criticism

  • Battery not replaceable: Built in, no spare battery for longer jobs
  • Short turbo run time: Full power about 18 min
  • 82 dB: Audibly loud in use

Specifications in detail

Type2-in-1 cordless stick vacuum (convertible)
Battery lifeup to 55 min (eco) · ~18 min (turbo)
Suction systemRobustAir (28 V max)
Weight3.0 kg
Dust container0.4 L (bagless)
Filterwashable
Charging timeabout 5 h
Noise level82 dB
Placementfreestanding (without wall bracket)
AccessoriesCrevice tool, furniture brush, upholstery tool (built in), power floor nozzle with LED

Build quality & everyday use

What carries the Bosch Flexxo Gen2 Series 4 in everyday use: Accessories built in (crevice tool, brush & upholstery tool sit in the unit, no more searching) and Freestanding (stands without a wall bracket, no drilling in a rented flat). You have to be honest about the weaknesses: battery not replaceable. Built in, no spare battery for longer jobs.

If you set the device up to save space, make sure it stands on a stable, level surface with some air around it. This protects the mechanics and electronics in continuous use.

“Bosch Flexxo Gen2 Series 4 (BBH3K2801): accessories built in and freestanding, with a battery that is not replaceable as the trade-off. At 7.5/10 a fair deal from €159.”
The MiniHaushalt.de editorial team

Who is the Bosch Flexxo Gen2 Series 4 suited to? (Buying advice)

Perfect for:

  • ✓Small flats with little storage space
  • ✓Rented flats (no drilling)
  • ✓Anyone who never wants to search for accessories

Less suitable for:

  • ✕Very large areas in one go
  • ✕Anyone who needs a swappable battery
  • ✕Those who value quiet (82 dB)

Bosch Flexxo Gen2 Series 4 compared with alternatives

Head-to-head with the top alternatives from our cleaning comparison

Feature Bosch Flexxo Gen2 Series 4 Dreame R20 Roidmi RS60
Type2-in-1 stick vacuum2-in-1 stick vacuum2-in-1 (quiet)
Battery lifeup to 55 minup to 90 Minup to 70 Min
Weight3.0 kg1.67 kg2.7 kg
Suction power28 V max190 AW125 AW
Container0.4 L0.6 L0.55 L

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Frequently asked questions about the Bosch Flexxo Gen2 Series 4

Which cordless vacuum cleaner suits a small flat?
Ideal is a 2-in-1 model that needs little space and can be converted into a handheld vacuum. The Bosch Flexxo Gen2 stands freestanding (no wall bracket needed), has the accessories built in and becomes a handheld vacuum with one movement, just right for limited storage space.
Do you have to screw the Bosch Flexxo to the wall?
No. The Flexxo Gen2 stands freestanding on its floor nozzle, with no wall bracket and no drilling. In a rented flat that is a clear advantage: you simply put it in a corner or a storage cupboard.
Is the Bosch Flexxo bagless?
Yes, bagless with a 0.4 litre container and a washable filter. You save on bag costs; the container is emptied at the push of a button over the bin.
How long does the battery of the Flexxo Gen2 last?
In eco mode up to 55 minutes, in turbo about 18 minutes. The battery is built in, so it cannot be swapped for a charged spare, but for a small flat the run time is plenty.
7.5 / 10 · 2-in-1 tip

Verdict: is the Bosch Flexxo Gen2 Series 4 worth it?

A solid option with a clear profile: if you can live with a battery that is not replaceable, from €159 you get one thing above all: accessories built in. Best suited to: small flats with little storage space.

If you want to compare alternatives, you will find detailed data and reviews on our cleaning comparison page.

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Bosch Flexxo Gen2 Series 4
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