Stihl ASA 20 Cordless Secateurs – 25mm Cut

The Stihl ASA 20 Cordless Secateurs combine speed, control, and comfort for efficient pruning of trees, shrubs, and plants. Part of the AS System, they run on the AS 2 lithium-ion battery and can cut material up to 25 mm in diameter.

Weighing just 0.8 kg, the ASA 20 features two selectable blade opening widths, progressive cut control, and an OLED display showing battery level, blade setting, and cut count. With up to 2000 cuts per charge, they’re built for both regular garden care and longer pruning sessions.

Why Choose the Stihl ASA 20 Cordless Secateurs?

The ASA 20 is built for faster, easier pruning without sacrificing accuracy. It’s part of the Stihl AS System, meaning the same AS 2 battery can be used across other compact Stihl tools. Designed for both domestic and professional use, it handles green material up to 25 mm thick with ease.

Who They’re Designed For

Gardeners, landscapers, and grounds teams looking to reduce hand fatigue and speed up repetitive pruning tasks. Also well-suited to those who already own an AS System battery and want another compatible tool.

Key Strengths

• Two blade opening widths for efficient work on thin or thick branches
• Progressive cut control for precise trimming
• Clear OLED display with live tool data
• Integrated on-board tool for maintenance and blade changes
• Lightweight, well-balanced design for long periods of use
• Up to 2000 cuts per charge with AS 2 battery

Cutting Capability

The ASA 20 cordless secateurs are built to handle a wide variety of pruning jobs. With a maximum cutting thickness of 25 mm, they can tackle:

• Green branches and shoots on trees and shrubs
• Woody stems on bushes and ornamentals
• Light orchard pruning
• Garden plants with thicker stalks
• Dead or damaged growth for seasonal maintenance

The progressive cut control allows you to slow the blade for delicate stems or apply full pressure for tougher growth, making the ASA 20 effective across different plant types without switching tools.

What the Experts Say

T3 magazine praised the ASA 20’s effortless cutting power, progressive blade action, and overall comfort. Their testing reported up to four hours of performance on a single charge.

BBC Gardeners’ World Magazine awarded the ASA 20 a 4.8/5 score, highlighting its ease of use, digital read-out, and useful maintenance features.

Stephanie Hafferty (No Dig Home) found it comfortable even for those with mobility issues, describing it as a “joyful” tool capable of making clean 25 mm cuts.

Support and Spares

Suffolk Mowers supplies genuine ASA 20 replacement blades, AS 2 batteries, AL 1 chargers, and maintenance products. As an authorised Stihl dealer, we provide full after-sales support and servicing.

Compatible Accessories

• Stihl AS 2 lithium-ion battery
• Stihl AL 1 standard charger
• Genuine ASA 20 replacement blade set
• Stihl Multioil Bio and Superclean spray
• Protective gloves and safety glasses

Replacement Blades Available

When it’s time to refresh cutting performance, genuine ASA 20 replacement blades are available. This set includes both the cutting blade and anvil blade, made from hardened SK5 steel for a clean cut every time. Keeping a spare set on hand means no downtime in the middle of a job.

Technical Specifications

Frequently Asked Questions About Stihl ASA 20 Cordless Secateurs