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Cordless hedge trimmer buying guide: blade and gap

Updated: October 2026

You are standing in front of a privet that has put on a summer's growth, and the amazon.co.uk page is a pile of centimetres, volts and up-to claims. A cordless hedge trimmer buying guide has to start with the hedge you can reach, then the tooth gap, then whether a battery is in the box. The [cordless hedge trimmer comparison](/hub/lawn-and-garden-equipment/cordless-hedge-trimmer) keeps the twelve listings, the prices and the cells that disagree with each other. This page does not rank them. Prices are the 19 October 2026 amazon.co.uk capture. We did not lab-test these tools. A qualifying purchase through our links can earn a commission at no extra cost to you.

You are standing in front of a privet that has put on a summer's growth, and the amazon.co.uk page is a pile of centimetres, volts and up-to claims.

Our top picks

VOERJIA VOERJIA 21V 50 cm

Best overall

VOERJIA VOERJIA 21V 50 cm
8.2/10about £64.99
View offer
Bosch Bosch EasyHedgeCut 18-45

Rank 2

Bosch Bosch EasyHedgeCut 18-45
9.0/10about £57.00
View offer
Yard Force Yard Force LH C41A

Alternative

Yard Force Yard Force LH C41A
7.8/10about £100.00
View offer
On this page
  1. 1.Blade length and tooth gap
  2. 2.Battery in the box or on your shelf
  3. 3.Volts, ampere-hours, and a second pack
  4. 4.Weight and the job shape

Blade length and tooth gap

Which? puts 45–60 cm as the blade length that suits most gardeners, and a tooth gap up to about 20 mm for an annual trim of twiggy growth such as privet. Stems thicker than about 1 cm are a job for loppers. Handhelds in this set cluster at 45–55 cm with stated gaps of 14–17 mm. A wider gap is not a free upgrade. A stem that will not enter the teeth will not be finished by a higher voltage on the title. On the EasyHedgeCut the blade bullet says 45 cm and a cutting-width cell says 40.5 cm. Keep both. The VOERJIA bullet says up to 50 cm, and its cutting-width cell says 20 inches. Twenty inches is not 50 cm. If two numbers disagree, do not average them.

Battery in the box or on your shelf

The supply line changes the price more than the brand name does. The EasyHedgeCut 18-45 is about £57.00, and the title excludes the battery and charger. One UK review put a separate battery at about £44.99. That shelf price is a working tool only if a green 18 V pack and a charger are already charged in the shed. If they are not, you are pricing a kit you have not bought yet. The VOERJIA is the other shape of price: about £64.99 with two 2,000 mAh packs and a charger. The title area says 750 W and a later bullet says 800 W. Those watt figures stay as a conflict, as do the 50 cm and 20 inch figures. A pack in the carton is the point of a kit. It is not evidence the tool will run next spring. Which? reported in February 2024 that batteries were a common owner-reported fault across cordless hedge trimmers. That note is not a fault on a named ASIN here.
VOERJIA VOERJIA 21V 50 cm

Testsieger

VOERJIA VOERJIA 21V 50 cm
8.2/10about £64.99
View offer

Volts, ampere-hours, and a second pack

Volts name the system. Ampere-hours name how much charge a pack holds, and the time still depends on the hedge. An 18 V Bosch body does not become a 21 V kit because both are cordless. The EasyHedgeCut title says 18 V and the voltage cell says 3.6. Both stay, because they conflict. A 21 V kit will not run on the Bosch pack. Which?'s cordless runtime band is about 20–90 minutes across tools they have looked at, not a promise for these ASINs. The VOERJIA says about 30 minutes on each of two packs. A second pack matters when the first dies halfway along a face. It does not make a 15 mm gap cut thicker wood.

Weight and the job shape

Weight is what you are still holding at the end of the hedge. The EasyHedgeCut item weight is 2.3 kg without a battery in the box, so a pack adds mass that figure does not include. Both poles in this set print 4.5 kg. UK reviews of the Yard Force LH C41A, at about £100.00, keep returning to that weight when the tube is fully out. A heavier bar can be the right shape if you can already reach the face. It is the wrong reason to buy a pole for a hedge at chest height. If the top is already above your head, the shape choice sits on the pole hedge trimmer or handheld page. Once you know the bar, the gap and whether the pack is yours already, the best cordless hedge trimmer page says who should skip each strong listing.

Common questions

What blade length do I need for a normal garden hedge?
Which? uses 45–60 cm for most gardeners. Handhelds in this comparison sit mainly at 45–55 cm. A short privet you cut every year does not need a much longer, much heavier bar. Match the length to the run you can already reach from the ground. A longer handheld still does not reach a top you cannot see.
What does tooth gap change?
Tooth gap is the opening the teeth are laid out for, not a quality score. Which? treats a gap up to about 20 mm as an annual twiggy trim, and points stems thicker than about 1 cm to loppers. A wider gap is coarser on fine tips. It does not replace a lopper on old wood.
Is a bare tool cheaper once I add a battery?
Only if the pack and charger are already yours. The EasyHedgeCut body is about £57.00 without them, and one UK review priced a battery at about £44.99. The VOERJIA kit is about £64.99 with two packs and a charger. Adding a Bosch pack to the bare body can land above that kit price. Compare the working tool, not the lowest number on the card.
Do more volts cut thicker stems?
Volts name the battery system. They do not widen the teeth. A 21 V kit with a 15 mm gap still stalls on wood that will not enter 15 mm. The EasyHedgeCut's 18 V title and its 3.6 V cell are a listing conflict, not two tools. Thickness is the gap, then the motor's ability to keep the blades moving in that gap.
What should I do when two numbers on the listing disagree?
Keep both, and do not average them. The Easy voltage cell says 3.6 against an 18 V title. The VOERJIA cell says 20 inches against a 50 cm bullet, and 750 W against 800 W. Treat the conflicting cell as unresolved rather than as a silent correction.

Related pages

How to trim a hedge

Cordless hedge trimmer

Best cordless hedge trimmer UK: pack, kit, or pole

Pole hedge trimmer vs handheld for reach and weight

When can I cut my hedge UK: a nest, farm, or garden

Sources

Public UK sources and amazon.co.uk listings from the research digest, captured on 19 October 2026.

  1. Which? — How to buy the best hedge trimmer (retrieved 19.10.2026)
  2. RHS — How to trim a hedge (retrieved 19.10.2026)
  3. RSPB — Birds' nests and nestboxes (retrieved 19.10.2026)
  4. The Management of Hedgerows (England) Regulations 2024, regulation 3 (retrieved 19.10.2026)
  5. Anti-social Behaviour Act 2003, Part 8 (retrieved 19.10.2026)
  6. HSE INDG480 — Hand-arm vibration (retrieved 19.10.2026)
  7. Control of Noise at Work Regulations 2005, regulation 4 (retrieved 19.10.2026)
  8. BS EN 62841-4-2:2019+A1:2022 — Particular requirements for hedge trimmers (retrieved 19.10.2026)