A man uses the Flexxo Series 4 for different purposes, from the floor, to the countertop and the ceiling.

The new Flexxo cordless vacuum.

Faster cleaning. From floor to ceiling.

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Two vacuums in one.

A cordless handstick with detachable handheld.

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Series 4 Rechargeable vacuum cleaner Flexxo Gen2 23Vmax White

BCH3P2301

Series 4 Rechargeable vacuum cleaner Flexxo Gen2 28Vmax Blue

BCH3K2851

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Our most powerful Freestanding Cordless.¹

A man stands happily next to the Flexxo Series 4 vacuum cleaner in a bright living room. He leans with one hand on the vacuum cleaner.

Effortless, powerful and all-in-one.The Flexxo Series 4 combines a powerful stick vacuum with a detachable handheld. Switch effortlessly and quickly between surfaces thanks to an integrated handheld and three on-board accessories. No need to grab accessories from other places.

More reasons to choose Flexxo.

Split image of a Flexxo cordless vacuum with two versatile accessories: left shows the brush attachment, right shows the nozzle, so accessories are always within easy reach while vacuuming.

Quickly change surfaces.With built-in tools, you switch instantly between surfaces for fast cleaning. Buy now

The Flexxo Series 4 is used on a big spot of dirt on the floor, with its LED lights on, highlighting 99.9% cleaning effectiveness.

Spotless floors with less effort.More than 99.9% dust pick-up² with extra-bright LED lights revealing hidden dirt. A single stroke is often enough.Buy now

Flexxo series 4 vacuum cleaner on light wood floor with LEDs, highlighting 220 m² cleaning coverage.

One charge for the whole home.Up to 60-minute runtime for your entire home³. With a protected battery that's replaceable. Buy now

Flexxo Series 4 on a light carpet vacuuming confetti; inset shows Auto, Turbo, Eco, and Off power controls.

Smart Auto Mode.Flexxo intelligently adjusts to hard floors and carpets. Result is an ideal balance of suction power and runtime.Buy now

Person vacuuming a light wood kitchen floor with a Flexxo Series 4; illuminated cleaning head, scattered debris, and icons showing 27% vs 73% related to the weight distribution.

Lightweight in hand.73% of its weight stays on the floor⁴. You hold only a quarter of the total weight for comfortable cleaning. Buy now

A man stands still next to the upright parked Flexxo Series 4.

Secure selfstanding design.Park it anywhere while you pause or switch to handheld mode. Stands upright without support. Buy now

Reasons to choose Bosch.

Award-winning appliances used by millions.

An anniversary wreath with 32 millions user on a light background.

Over 32 million consumers in Europe⁶.That have purchased a Bosch vacuum cleaner since 2004. Join them today.

A collection of award logos on a graphic background in the shape of a trophy.

60 test awards since 2013⁵.Our vacuums have earned top international awards from leading independent test institutes.

An anniversary wreath with 85 years on a light background

85 years of German vacuum cleaner engineering.German quality built to last with rigorous component testing.

Most trusted brand⁷.Voted most trusted brand in 2025. The choice consumers personally recommend.

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Footnotes.

¹Highest average dust and debris removal, compared to other Bosch Freestanding Cordless Vacuums.

²Dust pick-up measured in Turbo mode on hard floors with crevices. Tested according to EN IEC 62885-4:2020/A1:2023.

³Measured internally in Eco mode based on EN IEC 62885-4:2020/A1:2023 cl. 6.16.

⁴Weight in hand ≤27% of total appliance mass acc. to EN IEC62885-4:2020/A1:2023.

⁵For years, Bosch vacuums have earned awards from various independent test institutes. Winning models include Cordless (e.g. BKS1051GQC), Bagless Serie 6 (e.g. BGC41XFMLY), Bagged Serie 8 (e.g. BGL8XPER).

⁶Source: NIQ, GfK Panelmarket EU,19 ctrs, Vacuum Cl., agg. sales volume, 2004–25.

⁷Most Trusted Brand 2025 - Source: Reader‘s Digest | Trusted Brands 2025 Germany; DIALEGO, Aachen; n=4,000.