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Small Garden

STIHL FSA 45 Garden Battery Line Trimmer (Integrated Battery)

Product code:
4512 011 5704
  • Rated Voltage (V): 18
  • Weight* (kg): 2.3
  • Run time* (min): 20


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Delivery, Warranty, Returns & Exchange


FREE Home Delivery on all online orders

Store Pick Up - FREE. Includes assembly of tools prior to collection. The store will contact you when your order is ready.

Returns & Exchanges

We will happily accept returns or exchanges up to 14 days after the date of purchase,  provided the products are in their original condition and packaging. Click here to view our full Returns Policy


All STIHL products purchased online will be issued a STIHL warranty.

1. Tools used for home/farming applications receive a 2 year warranty. Double the warranty of your STIHL 2 MIX, STIHL 4 MIX® and STIHL 2 Stroke petrol tools purchased online to 4 years by adding HP Ultra Oil (minimum 1L) to your purchase.

2. Tools used in a professional application receive a 6 month warranty

3. STIHL Polymer Bodied/decked Lawnmowers receive a 10 year warranty on the polymer body (not associated parts) the handle and the catcher.

Click here to find out more about the STIHL Warranty


The STIHL FSA 45 Battery Line Trimmer is incredibly light, compact and easy to use for small garden trimming tasks. The mowing head can be turned on its side, which is particularly useful for vertical edge trimming.

STIHL Battery Line Trimmers are very simple to use, push the button and go! The FSA 45 has an integrated Lithium-Ion battery, that you charge like a cell phone (charger included). The high performing STIHL batteries offer consistent performance with no reduction in power as the battery depletes, zero emissions and are so quiet that ear protection is not required.

The FSA 45 is easy to control when trimming close to garden plants due to the loop handle configuration. The handle is also easily adjusted and the shaft is extendable to your preferred height. The FSA 45 comes with plastic Polycut blades, which are a breeze to replace.

This is a high quality Line Trimmer at a great price and to give you additional reassurance, it comes with a domestic 2-year warranty and you'll have access to ongoing service and support from your local STIHL SHOP.

Run time: Up to 20 minutes with integrated Battery

Run times quoted are based on ideal operating conditions. Times will vary depending on load and conditions. 


Rated Voltage (V)


Weight (kg)


Length no cutting tool (cm)


Standard Cutting Head

STIHL PolyCut 2-2

Replacement Poly Cut Blades

STIHL PolyCut Replacement Blades

Handle Type


Blade can be fitted


STIHL Battery System


Recommended Battery


Recommended Charger

Charging Cable

Charge Time with Recommended Charger

210 minutes, or to charge it up to 80%, it takes 145 minutes

Power Source


What's in the Box?

FSA 45 Line Trimmer, PolyCut Head 2-2, enough PolyCut Blades to get you started.

  • Quiet
    The STIHL Cordless tools are so quiet you don't even need to wear ear protection. They are ideal to use in noise sensitive areas like schools, hotels and parks.
  • Loop Handle
    Loop Handle
    Loop handle Line Trimmers and Brushcutters are ideal for trimming between bushes and shrubs and other areas where space is limited or when you need greater control over the tool.
  • Adjustable Shaft
    Adjustable Shaft
    The shaft of the Line Trimmer is adjustable by up to 170mm. This means the length can be easily adapted to suit your height or the job you are doing.
  • Vertical Edge Trimming
    Vertical Edge Trimming
    The head of the Line Trimmer can be rotated to change the tool from a grass trimmer into a edger, then you can accurately trim around borders, flower beds and pathways.
  • Adjustable Loop Handle
    Adjustable Loop Handle
    It is possible to adjust the loop handle to 6 different settings, up to an angle of 120 degrees. This means you can set it to the most comfortable position for you.
  • Activation Key
    Activation Key
    If the activation key is removed, the tool cannot be started. This feature increases safety during storage or transport.
  • Charge Level Indicator
    Charge Level Indicator
    The charge level of the Battery is indicated with four LEDs on the side of the Battery.
  • Charger Cable
    Charger Cable
    Using the charger cable you plug the tool in and charge it just like your phone.
  • Spare Blade Storage
    Spare Blade Storage
    The FSA 45 uses PolyCut blades, which can be easily replaced. Up to five spare blades can be stored on the tool, so they are right there whenever you need them.
  • Spacer Bracket Protects Plants
    Spacer Bracket Protects Plants
    The metal spacer bracket protects your garden plants from being accidently trimmed. It can also be folded up if not needed.

Q: How long will the battery last?

A: The battery will last up to 20 minutes or mow up to 250m of lawn edges. This will depend on what is being cut and how the tool is being used.

Q: How long does it take to charge?

A: To fully charge the battery it takes 300 minutes, or to charge it up to 80%, it takes 210 minutes with the charging cable.

Q: What size garden will it maintain?

A: The FSA 45 is the ideal tool for smaller gardens.

Q: Are the batteries interchangeable?

A: The Battery is integrated into the tool, so it is not interchangeable.

Q: What type of cutting attachment does this Line Trimmer use?

A: The FSA 45 comes with a PolyCut 2-2 mowing head. The PolyCut blades are efficient, easy to use and give a great finish to your lawn.

Q: What should I wear when using this Blower?

A: We recommend that you wear snug-fitting clothes, glasses, gloves and sturdy boots or shoes, and tie back long hair.

Q: Does this tool come with a warranty?

A: Yes - The FSA 45 comes with a 2-year domestic warranty.


Looking after your machine

STIHL Battery tools are built to last but looking after your tool will extend it's life further. After using your Line Trimmer, use a damp cloth or soft brush to remove any dirt or grass clippings from the exterior of the tool.

STIHL PolyCut blade replacements

You can purchase replacement STIHL PolyCut blades for your Line Trimmer in-store, or online for Home Delivery and Click & Collect.

Storing your Line Trimmer

When you are not using your Line Trimmer, remove the activation key and store it in a safe and secure location that children cannot access. If you plan to use it within a month, the FSA 45 can be left charging until you need it.


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