FSA 45 Cordless Grass Trimmer
Handy cordless grass trimmer with PolyCut 2-2 cutting head and integrated battery
Overview
Part of the AI Line, STIHL's easy-to-use cordless grass trimmer is perfect for straightforward trimming and clearing work in outdoor areas at home. Integrated battery with charge level indicator, shaft and loop handle offering tool-free adjustment, adjustable mowing unit working angle (useful for vertical edge trimming among other tasks), easy to switch between PolyCut blades and mowing lines without changing the mowing head, spacer bracket. Battery charging time: 145 min/210 min (80%/100%). Approximate working time up to 20 minutes.
Versions
Price-
FSA 45 - PolyCut 2-2 mowing head£119.01*
* Manufacturer's recommended retail price updated as of May 2022. The manufacturer's recommended retail prices are subject to change without notice.
The version(s) available in each country may differ from the above range and specifications; specific details may be subject to change without notice. Please ask your local STIHL Approved Dealer for further information.
Technical data

Technical data
Technical data | Value |
---|---|
Cordless technology | AI Line |
Sound pressure level dB(A) 1) | 80 |
Standard cutting tool | PolyCut 2-2 |
Sound power level dB(A) 1) | 94 |
Rated voltage V | 18 |
Weight kg 2) | 2.3 |
Vibration value, right, with line head m/s2 3) | 4.9 |
Vibration value, left, with line head m/s2 3) | 1.7 |
Total length cm 4) | 110 |
Cutting diameter mm | 250 |
Battery life time with PolyCut 2-2 min 5) | up to 20 |
Battery life time with mowing head min 5) | up to 12 |
Recommended battery | Integrated |
1) K-Wert nach RL 2006/42/EG = 2,0 dB(A)
2) Including battery
3) K-factor according to DIR 2006/42/EC = 2m / s ²
4) Without cutting attachment
5) Battery life times are approximate and may vary depending on application
The version(s) available in each country may differ from the above range and specifications; specific details may be subject to change without notice. Please ask your local STIHL Approved Dealer for further information.
Features

Standard features
The version(s) available in each country may differ from the above range and specifications; specific details may be subject to change without notice. Please ask your local STIHL Approved Dealer for further information.
Accessories

Accessories
-
-
STIHL Smart Connector
STIHL connected is a smart fleet management system that enables professional users to digitally manage machine fleets and work assignments.
This is managed by the STIHL Smart Connector - a sensor with a diameter of just under 5cm, which is mounted on the tool. It can be mounted on petrol, electric or battery-powered tools where it records and saves the operating hours while the motor is running and transmits this information via Bluetooth® 4.2 to the STIHL connected App (the smart connector can be mounted on non-STIHL tools too). The Smart Connector offers entirely new functions and services, as a basis for device management both in your home garden using the STIHL connected App, and for managing your machine fleet using the STIHL connected Portal.
Here’s a few reasons why STIHL connected can help manage your fleet of tools:
- The Digital Fleet Management keeps a record of all tools and their service record
- You get prompts when a tool needs servicing, so you never forget to change the plug, filter or just carry out maintenance
- You can see how many hours a tool has done, so you can plan which tools to use, replace or buy more of
- At the end of the day, you can open the app and see which tools are next to you - so you can tell if something is missing
- Book a service with your nearest STIHL Approved Dealer and give them access to see what work will be needed in advance.
STIHL Connected is an intuitive way to manage your machine fleet and workload intelligently and efficiently. Visit: STIHL connected FAQs to find out more.
Download the app for free or visit the STIHL connected Portal by clicking on the following links:
Technical data Value Length 53 mm Width 42 mm Connectivity Bluetooth 4.2 Height 14 mm Weight 20 g Dimensions (l x b x h) 53 x 42 x 14 mm Signal range Approx. 10 m Running time per battery charge Approx. 1 Year Connectivity Bluetooth low energy 4.2 Battery 3V CR 2.032 Versions
Price- Smart Connector £21.99*
* Manufacturer's recommended retail price updated as of May 2022. The manufacturer's recommended retail prices are subject to change without notice.
-
-
-
Set of plastic blades for PolyCut 2-2, 3-2
Replacement plastic blades for PolyCut 2-2 and 3-2 mowing head, set of 8 plastic blades.
Versions
Price- Orange PolyCut replacement blades (8) £2.89*
* Manufacturer's recommended retail price updated as of May 2022. The manufacturer's recommended retail prices are subject to change without notice.
-
-
-
PolyCut 2-2 mowing head
Universal cutting tool for trimming and working on large areas. With two or three mobile plastic blades.
PolyCut 2-2 – for FSA 45
Versions
Price- PolyCut 2-2 £24.40*
* Manufacturer's recommended retail price updated as of May 2022. The manufacturer's recommended retail prices are subject to change without notice.
-
-
-
Round mowing line (rolls)
This high performance mowing line can be used universally and is available in many different diameters for all STIHL line mowing heads. Suitable for all trimming and mowing jobs and specially developed against fraying and fusing.
STIHL professional tip - leave your new mowing line in water for 24 hours before use. This will increase the flexibility and lifespan of the mowing line.
Versions
Price- Roll Ø 1.4 diameter (mm) x 16.0 roll length (m) - grey £5.02*
* Manufacturer's recommended retail price updated as of May 2022. The manufacturer's recommended retail prices are subject to change without notice.
-
-
-
Round mowing line (rolls)
This high performance mowing line can be used universally and is available in many different diameters for all STIHL line mowing heads. Suitable for all trimming and mowing jobs and specially developed against fraying and fusing.
STIHL professional tip - leave your new mowing line in water for 24 hours before use. This will increase the flexibility and lifespan of the mowing line.
Versions
Price- Roll Ø 1.6 diameter (mm) x 19.0 roll length (m) - blue £5.25*
* Manufacturer's recommended retail price updated as of May 2022. The manufacturer's recommended retail prices are subject to change without notice.
-
-
-
Round and quiet mowing line (rolls)
The spiral grooves of the low noise mowing lines considerably reduce wind noise. This mowing line is ideally suited for use with electric and cordless brushcutters due to the reduced noise level.
STIHL professional tip - leave your new mowing line in water for 24 hours before use. This will increase the flexibility and lifespan of the mowing line.
Versions
Price- Roll Ȼ 1.6 diameter (mm) x 19.0 roll length (m) - blue £5.88*
* Manufacturer's recommended retail price updated as of May 2022. The manufacturer's recommended retail prices are subject to change without notice.
-
-
-
STANDARD Glasses - Clear
EN 166, also suitable for spectacle-wearers, material with 100 % UV protection, side protection.
Technical data Value UV-Protection 100 % Weight 40.3 g Versions
Price- STANDARD Glasses - Clear £6.92*
* Manufacturer's recommended retail price updated as of May 2022. The manufacturer's recommended retail prices are subject to change without notice.
-
-
-
FUNCTION SensoTouch
FUNCTION SensoGrip gloves, knitted with nitrile dipping to provide excellent handling. Good breathable properties. Allows the user to operate smartphones or tablets without needing to remove the gloves.
Technical data Value Cut protection class No protection Versions
Price- FUNCTION SensoTouch M, 9 £5.18*
* Manufacturer's recommended retail price updated as of May 2022. The manufacturer's recommended retail prices are subject to change without notice.
-
-
-
FUNCTION SensoTouch
FUNCTION SensoGrip gloves, knitted with nitrile dipping to provide excellent handling. Good breathable properties. Allows the user to operate smartphones or tablets without needing to remove the gloves.
Technical data Value Cut protection class No protection Versions
Price- FUNCTION SensoTouch L, 10 £5.18*
* Manufacturer's recommended retail price updated as of May 2022. The manufacturer's recommended retail prices are subject to change without notice.
-
-
-
FUNCTION SensoTouch
FUNCTION SensoGrip gloves, knitted with nitrile dipping to provide excellent handling. Good breathable properties. Allows the user to operate smartphones or tablets without needing to remove the gloves.
Technical data Value Cut protection class No protection Versions
Price- FUNCTION SensoTouch XL, 11 £5.18*
* Manufacturer's recommended retail price updated as of May 2022. The manufacturer's recommended retail prices are subject to change without notice.
-
The version(s) available in each country may differ from the above range and specifications; specific details may be subject to change without notice. Please ask your local STIHL Approved Dealer for further information.
Documents
Owners manuals and safety brochures
Languages | Date | Link |
---|---|---|
![]() |
07/12/2021 |