Comparison · Garden · 2 models
Einhell GE-CM 18/33 Li vs Bosch Rotak 18V-32: two brushless 18 V mowers, two battery platforms
Two small brushless cordless mowers with a 4.0 Ah battery in the box, the same five heights from 25 to 65 mm and almost the same width. Einhell's cuts 33 cm, says 200 square metres and has a 30 litre box with a fill indicator. Bosch's cuts 32 cm, has a 35 litre bag and a mulch plug, and leaves area and weight to retailers. The decision is mostly which battery your shed already runs on.
Quick answer
Side by side
| Model | Cutting width | Cutting height | Grass box | Motor | Battery | Lawn per charge | Mulching | Weight | Where to buy |
|---|---|---|---|---|---|---|---|---|---|
| Einhell GE-CM 18/33 Li (4.0 Ah kit)the Power X-Change mower with a stated lawn size | 33 cm | 25–65 mm, 5 steps | 30 l | Brushless (PurePOWER) | 18 V Power X-Change, 1 × 4.0 Ah, fast charger included | 200 m² | No confirmed data | 10.9 kg† | View listing |
| Bosch Rotak 18V-32 (4.0 Ah kit)the Power for All mower with a mulch plug | 32 cm | 25–65 mm, 5 steps | 35 l | Brushless | 18 V, 1 × 4.0 Ah, charger included | 150 m²† | Yes, mulch plug included | 10.7 kg† | View listing |
Scroll sideways to see every column
† Figure from a retailer listing or otherwise awaiting confirmation from the manufacturer; other figures come from manufacturer manuals and leaflets.
Einhell’s width, heights, box, motor, battery, lawn size and weight are from Einhell UK; its warranty is from the listing and its weight is flagged against the listing’s. Bosch’s width, heights, bag, motor and mulching are from Bosch’s page; its kit battery, lawn size and weight come from the listing and retailers and are flagged.
Cut and box
the Power X-Change mower with a stated lawn size
Einhell GE-CM 18/33 Li (4.0 Ah kit)
- Cutting width
- 33 cm
- Cutting height
- 25–65 mm, 5 steps
- Grass box
- 30 l
- Motor
- Brushless (PurePOWER)
- Battery
- 18 V Power X-Change, 1 × 4.0 Ah, fast charger included
- Lawn per charge
- 200 m²
Check price
A 33 cm cut, five heights from 25 to 65 mm, a 30 litre nylon box with a fill indicator, and Einhell’s brushless PurePOWER motor. An 18 V Power X-Change 4.0 Ah battery and fast charger are included; Einhell recommends it for lawns up to 200 square metres. 10.9 kg by Einhell, 11.2 by the listing.
Strengths
- Battery platform with the widest range of tools in this group
- Brushless motor and a fill indicator at a low price
- Einhell states the lawn size plainly: 200 m²
Limitations
- Smallest box here at 30 l
- Weight figures differ by 300 g between Einhell and the listing
Good for
- a 150 to 200 m² lawn and a Power X-Change drill in the garage
Look elsewhere if
- long or wet grass, where a 30 l box fills fast
the Power for All mower with a mulch plug
Bosch Rotak 18V-32 (4.0 Ah kit)
- Cutting width
- 32 cm
- Cutting height
- 25–65 mm, 5 steps
- Grass box
- 35 l
- Motor
- Brushless
- Battery
- 18 V, 1 × 4.0 Ah, charger included
- Lawn per charge
- 150 m²†
Check price
A 32 cm cut, five heights from 25 to 65 mm on a central lever, a 35 litre bag, a brushless motor, and a mulch plug. This kit adds an 18 V 4.0 Ah Power for All battery and charger. Bosch does not state area per charge or weight; retailers give 150 square metres and 10.7 or 11.5 kg.
A centimetre apart on width, identical on height; the Bosch’s bag is a sixth bigger and the Einhell’s box tells you when it is full.
Strengths
- Brushless motor and a mulch plug at the small end of the range
- Battery works in other Power for All tools, including other brands
- Five cutting heights from one lever
Limitations
- Bosch does not publish area per charge or weight for the UK kit
- 32 cm means more passes on anything over a small lawn
Good for
- a lawn up to about 150 m² and a shed with other 18 V Bosch tools
Look elsewhere if
- a lawn you mow in sections over 200 m²
Mulching
Bosch includes a mulch plug, so the mower can return fine clippings to the lawn rather than collect them. On a lawn cut weekly in the growing season, that means no emptying at all. Einhell’s page does not list mulching for the GE-CM 18/33 Li.
Lawn per charge
Einhell says 200 square metres; Bosch says nothing, and retailers say 150. Both have a brushless motor, a 4.0 Ah 18 V battery and a 32 or 33 cm deck, so the 50 square metre gap is better read as Einhell committing to a figure than as a difference in the mowers.
The platform
Einhell’s Power X-Change runs Einhell’s own tools, from drills in the garage to the garden range. Bosch’s 18 V Power for All is an alliance: the same battery fits Bosch, Gardena and Flymo garden tools. Either way, a second tool on the same platform can be bought without a battery.
Warranty
Einhell’s listing gives two years, plus one on registration. Bosch’s warranty for this kit is not among the figures we recorded, so we do not state one.
Which one, by shed
- Already on Einhell Power X-Change: Einhell GE-CM 18/33 Li.
- Already on Bosch, Gardena or Flymo 18 V: Bosch Rotak 18V-32.
- Wants to mulch: Bosch Rotak 18V-32.
- Wants a maker’s lawn figure: Einhell GE-CM 18/33 Li.
- Lawn over 200 square metres: neither on one battery; the Gtech CLM50.
Sources
Facts checked 15 November 2026
- Einhell UK — GE-CM 18/33 Li (1 × 4.0 Ah) product page — Manufacturer documentation, checked 23 October 2026
- Retail listing (Einhell) — Retailer listing, checked 23 October 2026
- Bosch DIY UK — Rotak 18V-32 product page — Manufacturer documentation, checked 23 October 2026
- Retail listing (Bosch) — Retailer listing, checked 23 October 2026
Which battery platform is better?
The one you already own. Einhell's Power X-Change covers a wide range of garden and workshop tools under one brand. Bosch's 18 V Power for All is shared with other brands, including Gardena and Flymo. Both batteries are 18 V 4.0 Ah here; buying into either means the next tool can come without a battery.
How much lawn will each cut?
Einhell recommends its mower for lawns up to 200 square metres. Bosch's UK page does not give a figure; retailers say 150, which we flag. With the same battery capacity and a near-identical deck, the gap is more likely in how each maker states it than in the mowers.
Can either mulch?
The Bosch can: a mulch plug in the box turns it from collecting to mulching, returning fine clippings to the lawn. Einhell's page does not list mulching for this model. Mulching suits a lawn cut often enough that each cut is short.
Which is lighter?
Einhell says 10.9 kg with battery and the listing says 11.2. Bosch does not state a weight; retailers give 10.7 and 11.5 kg. All four figures sit within a kilo, which is not enough to choose on.
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