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Bosch ROTAK18V-32 review

A 32 cm three-in-one machine with a fabric box, a mulching plug and a 4.0 Ah pack included, on a battery alliance spanning ten brands.

The bottom line A small machine with the two things that matter on a small machine done properly: a mulching plug in the box and a 35-litre catcher, which is generous for a 32 cm deck. The pack is from an alliance the maker states covers more than ten brands and 150 products, and it is supplied with a charger.

What the maker prints on its own page

A cordless mower with a brushless motor and a 32 cm blade, described as a 3-in-1 machine for small to medium lawns. A mulching plug is supplied for returning the clippings to the lawn. The grass box is fabric and holds 35 litres. The cutting height range is 25 to 65 mm. The pack is an 18 V 4.0 Ah battery from an alliance the maker states covers more than ten brands and over 150 products, and a charger is included.

A 35-litre box on a 32 cm deck

That ratio is the best on this shelf. A narrow deck produces less material per metre walked, so a generous box on a small machine means genuinely fewer stops — which is the practical measure of a catcher, rather than its volume in the abstract.

On wet grass the effective volume of any box is much smaller than the stated one, because the material packs and the airflow gives up before the bag is full.

The plug in the box

A mulching plug closes the discharge so clippings recirculate. It is often an accessory sold separately, and finding it in the carton is worth a line.

What it does not do is turn this into a mulching mower. A deck designed to mulch is shaped to hold clippings in circulation under the blade; a plug closes a chute. Both are sold under one word.

What is absent

A weight, a noise figure, and the number of height steps. The energy on board is about 72 watt-hours, which on a 32 cm deck goes further than the same pack would on a 43 cm one.

Availability

From 169 € to 200 €, that being the spread across the German, French, Italian and Spanish Amazon stores on the day of the survey.

Beyond the euro zone, the British Amazon store prices it in its own currency, which the spread above sets aside.

Nothing came back from the American Amazon store at all; the buy button there runs a search rather than opening an empty page.

Taken from Keepa on the day this page was last revised; stock and prices move without notice.

Prices quoted in this text were read on 26 September 2026. The live price is at the top of the page.

The declared figures, and the point they stop at

Strengths

  • A 35-litre box on a 32 cm deck — proportionally the most generous here
  • The mulching plug is in the carton rather than an accessory
  • A battery alliance rather than a single-brand platform

Compromises

  • No cutting-height step count, only the range
  • No weight and no noise figure
  • A fabric box is lighter to carry and harder to rinse out than a rigid one

Specifications

Cutting width32 cm, as stated
Battery platform18 V, an alliance the maker states spans 10+ brands and 150+ products
Battery suppliedYes — one 18 V 4.0 Ah pack and a charger, about 72 Wh
Stated areaNot published — described for small to medium lawns
Cutting heights25–65 mm
Catcher volume35 L fabric box
Functions3-in-1, with a mulching plug supplied
Guaranteed noiseNot published
WeightNot published
Amazon referenceB0G4RJBFDP (one reference across 5 Amazon marketplaces)
EAN4053423656879

What this machine usually gets asked

What does 3-in-1 mean here?

It counts what the deck can be configured to do — collect, mulch and discharge. It is a configuration count and says nothing about how well any of them is done. The word mulching has no definition behind it and has its own page on this site.

Is a fabric catcher worse than a plastic one?

Different. Fabric is lighter and folds away; a rigid box rinses out and holds its shape when full. Both restrict the airflow when they clog, which is what makes a mower start leaving rows.

How wide is the alliance?

The maker states more than ten brands and over 150 products. That is its claim and this page reports it as one — but a shared platform is genuinely unusual on this shelf, where most packs fit one brand.

Who this one is for

A small to medium lawn where the clippings should sometimes stay and sometimes go

Guides that feature it

Price and availability

A reference exists on these Amazon stores: France, Germany, Italy, Spain, United Kingdom. Listed is not the same as in stock — availability changes daily.

Details checked on September 26, 2026.

Sources

Specifications: manufacturer sheet and Amazon product page. Prices and availability: Keepa. No product on this site has been physically tested.

How we assess products