Bosch Rotak 18V-34 (34cm, 4.0Ah Battery & Charger)

How long does the battery last on one charge?

Battery runtime depends on your lawn size and grass thickness. The mower comes with an 18V 4.0Ah battery and one reviewer who tackled a 120 square metre irregularly shaped lawn reported finishing the job with a bar of charge still left on the indicator. That built-in battery indicator is a handy touch since you can check power levels before starting a job rather than guessing. For small to medium lawns this battery should comfortably get you through a full mow. If you've got a bigger plot or want backup power, spare 18V batteries typically cost around £25.

What size lawn is this mower suitable for?

Bosch designed this as a 3-in-1 mower with a 34 cm cutting width, which makes it best suited to small and medium-sized gardens. Reviewers mowing lawns around 120 square metres found the battery handled the whole area in one go. If your lawn is much larger than this you may need to recharge partway through, or consider picking up a spare battery.

Is assembly difficult?

No, assembly is quick and straightforward. One reviewer with decades of turf industry experience noted it took under ten minutes to put together, describing the instructions as clear and simple. The handles fold down using a double-switch mechanism, which also helps with compact vertical storage once you're done mowing.

What height of cut can I set?

The cutting height adjusts between 25 mm and 65 mm, giving you flexibility for different grass lengths and seasons. A shorter setting works well for a tidy finish in summer, while a higher setting suits early spring cuts or if you're trying to recover a patchy lawn.

How big is the grass collection box?

It comes with a 35 litre fabric grass bag. Reviewers found it fills up completely during a mow and is simple to detach and empty. One user specifically praised how it "fills the grass box completely" without clippings escaping or clogging the mower.

Can I use batteries from other Bosch tools with this mower?

Yes. This mower is part of the POWER FOR ALL ALLIANCE system, meaning the 18V battery works across more than 150 products from over 10 different brands. A reviewer confirmed the battery from their Bosch drill fitted the mower perfectly, which is useful if you already own other Bosch 18V tools and want to share batteries between devices rather than buying separate ones for each tool.

Does it have a mulching option?

Yes, a mulch plug is included in the box alongside the mower, 18V 4.0Ah battery and AL 18V-44 charger. This gives you the choice between collecting clippings in the grass bag or mulching them back into the lawn as natural fertiliser, depending on what your garden needs at the time.

What's the return policy if I'm not happy with my purchase?

The mower comes with a 30-day right of return, which applies regardless of your standard statutory right of withdrawal. This gives you a month to test it out on your own lawn and decide if it meets your needs before the return window closes. One reviewer mentioned some difficulty getting the guarantee process to work, so it's worth keeping your order confirmation and packaging just in case you need to make a claim.