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40V Cordless Strimmer: How to Compare Models and Kits

A 40V cordless strimmer may offer a higher-voltage platform, but model details still decide the right fit. The Cobra GT3240VZ is a documented example with adjustable cutting width; check what its kit includes.

A 40V cordless strimmer search often reflects a wish for more capacity for longer or heavier trimming, but voltage alone cannot establish which tool is strongest or best suited to your garden. Cobra’s GT3240VZ is a verifiable model in this class: the manufacturer describes a 40V lithium-ion system, adjustable 28–32 cm cutting width and a telescopic shaft. Its battery and charger are sold separately in the documented version.

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The essentials

Best Heavy Duty Cordless Strimmers in the UK for 2026

For demanding brush, the WORX WG084E offers a brushless motor, dual cutting system and included batteries. For lighter trimming, consider the wider 40V line models.

Cordless Strimmer Reviews: Five Battery Models Compared

For a balanced all-round kit, consider the Bosch UniversalGrassCut 18V-26-500. The WORX WG163E adds a wider head and two batteries; STIGA GT 100e is a lighter, compact option.

Our picks

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Einhell GE-CT 18/30 Li-Solo

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Best for adjustable cutting width and ONE+ battery owners

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RYOBI OLT1832

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By battery and power

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Our best-of lists

Best Heavy Duty Cordless Strimmers in the UK for 2026

For demanding brush, the WORX WG084E offers a brushless motor, dual cutting system and included batteries. For lighter trimming, consider the wider 40V line models.

Cordless Strimmer Reviews: Five Battery Models Compared

For a balanced all-round kit, consider the Bosch UniversalGrassCut 18V-26-500. The WORX WG163E adds a wider head and two batteries; STIGA GT 100e is a lighter, compact option.

Common questions

Questions before you buy

Is a 40V cordless strimmer more powerful than a 36V one?

The voltage labels alone do not provide a fair performance comparison, and some makers distinguish nominal from maximum voltage. Compare the model’s motor, cutting head, battery capacity and intended workload using manufacturer specifications.

What is the cutting width of the Cobra GT3240VZ?

Cobra’s brochure describes a 32 cm cutting width, while its technical documentation gives an adjustable range of 28–32 cm. Check the model’s manual for the exact configuration and usage details.

Does the Cobra GT3240VZ include a battery?

Cobra’s brochure states that the 40V battery is not included. Verify the current listing and bundle contents before ordering, as retailer packs can differ.

What should I check before buying a 40V cordless string trimmer?

Confirm the make and model, battery and charger inclusion, cutting-width range, line specification, and spare-part support. Also check whether the battery works with tools you already own.