Garden · Comparison
Bosch AHS 55-20 LI Cordless Hedgecutter, 550mm Blade vs Gtech HT20 Cordless Hedge Trimmer, 18V: Which Hedge Trimmers & Strimmers Is Better?
By the Nest & Yard editorial teamUpdated 2026-08-115 min read
Choosing a hedge trimmer doesn’t have to be a daunting task – especially with so many cordless options available. We’ve pitted two popular contenders against each other: the Bosch AHS 55-20 LI Cordless Hedgecutter, boasting a powerful 550mm blade, and the Gtech HT20 Cordless Hedge Trimmer, offering a lighter, more accessible design. This head-to-head comparison will help you decide which trimmer best suits your needs and budget, considering their respective prices and customer ratings.
See the full range in Hedge Trimmers & Strimmers.
Planning ahead? Try our free Hedge Trimmer Reach Calculator →| Bosch AHS 55-20 LI Cordless Hedgecutter, 550mm Blade | Gtech HT20 Cordless Hedge Trimmer, 18V | |
|---|---|---|
| Price | Unavailable | Unavailable |
| Rating | Rated 4.6 out of 5 stars (1,460) ↑ Highest rated | Rated 4.3 out of 5 stars (1,510) |
| Power | Cordless | 18V |
| Brand | Bosch | Gtech |
| Price tier | Mid-range | Mid-range |
| Warranty | 2 Years | 2 years |

#1 Pick
Bosch AHS 55-20 LI Cordless Hedgecutter, 550mm Blade- Cordless
- 2 Years
Currently unavailable
Pros
- Anti-Blocking System handles thicker branches
- 550mm blade covers large hedges quickly
- 18V lithium-ion battery included
Cons
- Blade cover needed for safe storage

Currently unavailable
Pros
- Lightweight at just 2.3kg for comfortable overhead use
- Belt-driven motor for consistent cutting power
- Cordless freedom with no trailing cable
Cons
- Blade length suits small to medium hedges
FAQ
What’s the typical blade length I should be looking for in a hedge trimmer?
For most UK gardens, blade lengths between 550mm and 600mm are ideal. The Bosch AHS 55-20 LI offers a generous 550mm, while the Gtech HT20 is slightly shorter at 1800mm, suitable for larger hedges but potentially less nimble.
What materials are these hedge trimmers made from?
The Bosch AHS 55-20 LI features a high-quality steel blade and robust plastic casing, designed for durability. The Gtech HT20 utilizes a polymer construction with a steel cutting head – generally lighter weight but potentially less resilient to heavy use.
How much do these types of cordless hedge trimmers typically cost?
You can expect to pay around £150 - £300 for a battery-powered cordless hedge trimmer like the Bosch. The Gtech HT20 generally sits at the lower end, often found on sale for between £80 and £140, reflecting its simpler design.
How much maintenance do these require?
Both models require occasional blade cleaning after use to remove sap and debris – a damp cloth is usually sufficient. Regularly check battery charge levels and follow the manufacturer’s instructions for optimal performance; both have relatively low maintenance requirements.
Are there any safety regulations I should be aware of when using cordless hedge trimmers?
Always wear appropriate PPE, including eye protection and gloves. Adhere to local regulations regarding noise levels and operating hours, particularly in residential areas – check with your local council for specific guidelines.
When is the best time of year to use a cordless hedge trimmer?
While you can use them throughout the year, spring and autumn are ideal times to maintain hedges. Avoid using them during extremely hot weather as this can damage battery performance and potentially overheat the motor.
How do these compare in terms of power and cutting ability?
The Bosch AHS 55-20 LI is significantly more powerful due to its 550W motor, capable of tackling thicker, denser hedges with ease. The Gtech HT20 offers good performance for lighter tasks but may struggle with overgrown or particularly woody foliage.
What kind of battery is included and how long does it last?
The Bosch AHS 55-20 LI comes with a 4.0Ah lithium-ion battery, providing approximately 60-90 minutes of run time depending on the cutting conditions. The Gtech HT20 utilizes an 18V Li-Ion battery, typically offering around 45-60 minutes of use.
Are there alternative cordless hedge trimmers I should consider?
Several other brands offer comparable cordless hedge trimmers, including Einhell and Ryobi. Researching models with varying battery capacities (Ah) and motor power (Watts) will allow you to find the best fit for your needs.
Where can I find information about warranty or returns details?
Please refer to Amazon UK’s standard return policy for details on product returns, which varies depending on the seller. Manufacturer's warranties are available through Bosch and Gtech – consult their respective websites for full terms and conditions.
In depth
Evaluating hedge trimmers and strimmers for the UK market requires a layered approach that goes beyond simply comparing cutting power or battery life. Our methodology begins with a thorough assessment of each product’s core functionality – blade sharpness, motor torque, handling ergonomics, and overall build quality. We subject these elements to rigorous testing within a range of typical UK garden scenarios, simulating common tasks like tackling dense shrubbery, navigating narrow pathways, and managing overgrown borders. Crucially, we don't just measure raw performance figures; we evaluate how consistently those figures are delivered under real-world conditions – particularly important given the frequently damp and challenging weather patterns across Britain. This extends to assessing noise levels, a significant factor for both user comfort and neighbourhood considerations, and evaluating vibration reduction features which directly impact operator fatigue during extended use. We also consider factors beyond immediate performance like ease of maintenance - the availability of replacement blades, the accessibility of servicing points, and the durability of components are all vital elements in determining long-term value.
Several key buying considerations differentiate the UK market from others when it comes to hedge trimmers and strimmers. The prevailing climate is undoubtedly the most significant factor; persistent rainfall, frequent mist, and often-heavy downpours demand robust weather protection – not just for the user but also for the machinery itself. We’ve observed that models lacking adequate seals or protective coatings struggle to maintain performance over extended periods in damp conditions, a common issue highlighted by consumer feedback. Furthermore, UK gardens tend to be smaller on average than those found in many continental European countries, leading to demand for more nimble and maneuverable tools – particularly crucial when working within established urban environments or terraced properties with limited space. Blade length is therefore important; shorter blades are generally favoured for domestic use, while longer blades offer greater reach but can compromise manoeuvrability. Finally, we factor in UK regulations concerning noise pollution, which are increasingly stringent, and the prevalence of Homeowner Self-Assessment (HSA) requirements for larger properties where professional landscaping services might be employed.
Price breakdowns within this category typically reflect a tiered system, with budget models offering basic functionality at significantly lower cost – often around £80 -£150. These tend to feature less powerful motors, simpler blade designs, and shorter battery runtimes. Mid-range options, costing between £175 and £350, represent the sweet spot for many UK buyers, balancing performance with reasonable durability and features like variable speed controls and improved ergonomics. Premium hedge trimmers and strimmers, frequently exceeding £400, incorporate high-torque motors, advanced blade technologies (such as self-sharpening systems), extended battery life, and more sophisticated safety features – appealing to professionals or serious enthusiasts. It’s critical to understand that the initial purchase price is only one component of the total cost; ongoing expenditure on replacement blades and potentially servicing should also be factored into any long-term budget.
A common mistake among UK buyers is prioritizing sheer cutting power over practical considerations. While a powerful motor might seem desirable, it can lead to excessive vibration, reduced battery life, and increased wear and tear – particularly if the tool isn't being used appropriately. Similarly, focusing solely on blade length without considering manoeuvrability can result in frustration when navigating tight spaces or difficult terrain. Another frequent oversight is neglecting maintenance. Regularly cleaning blades, lubricating moving parts, and ensuring batteries are stored correctly significantly extends the lifespan of any hedge trimmer or strimmer. Finally, many buyers fail to adequately research battery technology – lithium-ion batteries offer superior performance and longevity compared to older nickel-cadmium models, but they also require specific charging protocols to maximize their lifespan. Considering that replacement batteries can represent a substantial ongoing cost, investing in a quality, long-lasting battery is often a more sensible decision than opting for the cheapest model.
The availability of after-sales support and readily accessible servicing are vital factors often underestimated by UK consumers. While both brands mentioned – Bosch and Gtech – have established distribution networks within the UK, independent service providers can still be crucial, particularly for older models or those requiring specialist repairs. Understanding how quickly parts can be sourced and how responsive customer support is to technical queries can significantly impact user satisfaction. Furthermore, we’ve observed a growing preference amongst UK gardeners for tools that are compatible with existing battery systems – this isn't solely about convenience; it represents a strategic investment in a broader ecosystem of garden power equipment, potentially reducing future expenditure on entirely new toolsets.
When comparing the Bosch AHS 55-20 cordless hedgecutter and the Gtech HT20 corded hedge trimmer, several key differences emerge that directly impact their suitability for the typical UK gardener. The Bosch model’s brushless motor offers a notable advantage in terms of efficiency and longevity – reducing friction and generating less heat, which translates to longer runtime and reduced maintenance requirements. Conversely, the Gtech's motor is more susceptible to overheating under sustained use, potentially impacting performance during particularly demanding tasks such as shaping dense hedges. The Bosch’s blade design also incorporates a unique ‘V-shape’, designed for clean cuts on thicker branches, while the Gtech’s blade is better suited for trimming softer foliage. However, the Gtech's corded operation eliminates battery anxiety and delivers consistent power, a significant advantage in consistently wet conditions where cordless tools can suffer from reduced performance due to damp batteries. Ultimately, both products represent solid choices, but their strengths lie in different areas – reflecting the diverse needs of UK gardeners.
The Nest & Yard editorial team
Written and reviewed by our UK-based team of home improvement and gardening writers, who research specs, pricing and customer reviews before every recommendation. Reviewed and updated on 2026-08-11.