Try this cordless line trimmer...

RYOBI 18v ONE PLUS LINE TRIMMER STARTER KIT CLT-1830B

The Ryobi 18v One Plus Line Trimmer Starter Kit CLT-1823BP is powered by an 18v One Plus battery and comes with a one-hour battery charger with a thermal circuit breaker. It has an extendable shaft to suit your style of working, while its fully adjustable 'D' handle ensures comfort. It has a wide cutting path of 230mm and a cutting line diameter of 1.6mm. The cutting line spins at 9000rpm and safety levels are maximised thanks to its double acting safety switch. Two 18v batteries and a single line bump feed cutting head are included as standard.

BOSCH ART-23 'ACCUTRIM' CORDLESS GRASS TRIMMER

The Bosch ART-23 'Accutrim' Cordless Grass Trimmer features an innovative plastic blade system for precise, energy efficient cutting, and Bosch's SDS system for quick, tool-free blade changing. Two spools are supplied, one for normal grass and the other for heavier undergrowth, while vertical trimming and edging allow you to achieve faster, more precise results when walking. Handling is easy thanks to its lightweight, perfectly balanced design and ergonomic, height-adjustable, telescopic handle. The trimmer head is adjustable, enabling easy access under bushes and benches. The ART-23 comes complete with an 18v battery, a charger and 12 replacement blades.

Battery capacity: 1.5 Ah
Telescopic handle: 80 - 115 cm
Battery voltage: 18 V
Cutting circle diameter: 23 cm
Machine weight, including battery: 2.9 kg
Cutting system: Plastic blade

BOSCH ART-26 'ACCUTRIM' CORDLESS GRASS TRIMMER

The Bosch ART-26 'Accutrim' Cordless Grass Trimmer is supplied with one 18v battery and a fast charger and features an innovative plastic blade system for precise, energy efficient cutting. Bosch's SDS blade-changing system allows for tool free replacement, while handling is made easy thanks to its lightweight, perfectly balanced design and ergonomic, height-adjustable, telescopic handle. Two spools are supplied, one for normal grass and the other for heavier undergrowth and the ART-26 comes with a plant protector which allows you to maintain a distance from fences and walls. Vertical trimming and edging allow you to achieve faster, more precise results when walking. Attachable wheels are supplied as standard.
Battery capacity: 1.5 Ah
Telescopic handle: 80 - 115 cm
Battery voltage: 18 V
Cutting circle diameter: 26 cm
Machine weight, including battery: 2.9 kg
Cutting system: Plastic blade

BOSCH ART-23-LI 18v CORDLESS GRASS-TRIMMER (LITHIUM-ION)

The Bosch ART-23-LI 18v Cordless Grass-Trimmer is driven by Bosch's newly-developed Lithium-Ion battery system. This innovative technology reduces the tool's weight by 30% when compared with conventional units, while simultaneously offering significantly more power. Other benefits include shorter charge-times; no self-discharge and no-memory effect.
The ART-23-LI has an innovative plastic-blade system which is highly durable and energy-efficient and which produces clean, precise results. Its lightweight, ergonomic design combines with its adjustable auxiliary-handle and telescopic-shaft to make it comfortable and easy to control; while the incorporation of a plant-protector allows you to work with confidence and accuracy. Spare blades can be stored on the trimmer.

Battery type: Lithium-Ion
Battery power: 14.4v
Cutting diameter: 23cm
Telescopic handle/height adjustment: 80-114cm
Cutting system: plastic blade
Rotating cutter head: yes
Plant protector: yes
90° vertical edging: yes
Weight: 2.3 kg

BOSCH ART-26-LI 18v CORDLESS GRASS-TRIMMER (LITHIUM-ION)

With Bosch's superb new Lithium-Ion battery technology at its heart, the Bosch ART-26-LI 18v Cordless Grass-Trimmer far out-performs its conventionally-powered counterparts in terms of power and weight minimisation. These Lithium-Ion batteries also offer shorter charge-times, no self-discharge and no memory effect.
The ART-26-LI is exceptionally comfortable and easy to control, thanks to its lightweight ergonomic design, telescopic shaft and adjustable auxiliary-handle. Its innovative plastic-blade system is highly durable and energy efficient, and produces clean, accurate results; while the inclusion of a plant-protector ensures you can work with confidence and precision. New blades can be stored on the body of the trimmer.

Battery type: Lithium-Ion
Battery power: 18v
Cutting diameter: 26cm
Telescopic handle/height adjustment: 80-114cm
Cutting system: plastic blade
Rotating cutter head: yes
Plant protector: yes
90° vertical edging: yes
Weight: 2.4kg