The STIHL FSA 70 R is a high-performance battery-powered brushcutter designed to handle tough mowing, trimming, and clearing jobs in home gardens and larger residential spaces. As part of the STIHL AK System, it combines powerful cutting capability with quiet operation and excellent energy efficiency – making it ideal for use in noise-sensitive environments without compromising on performance.
 
Equipped with a brushless EC motor, the FSA 70 R provides consistent output across the entire battery charge, meaning you get the same high cutting power until the battery is fully discharged. Unlike many other battery tools, it will not suffer a gradual loss in performance as power drains. A built-in regenerative braking feature recovers energy when the throttle is released, helping to extend overall battery life during operation.
 
The FSA 70 R comes with the AutoCut C 12-2 mowing head, which features the STIHL Rapid Click System. This allows for quick, tool-free installation and removal of the mowing head. Line reloading is simplified thanks to the disc handle design — it can be rewound either on or off the machine. The tool is compatible with both 2.0 mm and 2.4 mm cutting line, and can also be fitted with the PolyCut 12-2 mowing head (sold separately), which also attaches via a simple click system without tools.
 
The loop handle is adjustable without tools using the quick-mounting system, allowing you to tailor the position for comfort and optimal control, particularly useful when working on slopes, around trees, or on uneven terrain. The control handle features variable speed adjustment with two power settings: Eco mode (level 1) for lighter tasks and full power mode (level 2) for tougher vegetation.
Other intelligent features such as the anti-vibration system, manual fuel pump equivalent (in electric form), and ferromagnetic air filtration ensure long service life, comfortable use, and reduced maintenance.
 
When powered by the AK 20 battery, the FSA 70 R offers:
25–45 minutes of runtime with the AutoCut C 12-2 head
50–90 minutes of runtime with the PolyCut 12-2 head
This makes it an excellent all-round cordless brushcutter for residential users who require power, precision, and flexibility.
 
Key Features:
Battery-Powered with EC Motor: Brushless motor for long life, efficiency, and consistently high performance throughout the battery cycle.
Rapid Click Mowing Head System: AutoCut C 12-2 head installs or removes at the push of a button. Reload line directly on or off the tool — no disassembly or tools needed.
Dual Power Modes: Switch between Eco mode (level 1) for lighter trimming and full power (level 2) for dense grass, optimising runtime and performance.
Variable Speed Control: Adjust speed in real time without changing your grip, ensuring efficient operation and comfort in all scenarios.
Regenerative Braking: When the throttle is released, kinetic energy is converted and fed back into the battery to extend runtime.
Anti-Vibration System: Significantly reduces operator fatigue over longer sessions, improving grip comfort and control.
Quick-Adjust Loop Handle: Tool-free adjustment for user height and optimal ergonomics, ideal for trimming in confined or awkward spaces.
Telescopic Blower Tube Equivalent: Adjustable cutting height for efficient operation at the correct working distance to avoid power loss.
Ferromagnetic Air Filtration System: Internal magnets collect metal particles from airflow, protecting the motor and extending its lifespan.
Consistent Performance: Maintains full cutting power until battery depletion, unlike many other battery-powered tools.
Integrated Hanging Eyelet: Allows for safe, compact wall storage.