HSA 50 Battery Hedge Trimmer
HSA 50 Battery Hedge Trimmer
HSA 50 Battery Hedge Trimmer
HSA 50 Battery Hedge Trimmer

HSA 50 Battery Hedge Trimmer

AK SYSTEM ICON Interchangeable Battery | View Range
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Make trimming your hedges an easy task with our lightweight, cordless HSA 50 hedge trimmer.

The double-edged, diamond ground blades deliver a smart finish on the bushes and hedges in your garden, and the droplet shape on the blade guides twigs and branches into the blades for an even cut. The HSA 50 is part of our AK System range of tools with interchangeable batteries - the battery in this tool can also be used in other tools in this range. 

  • Working time on recommended AK 10 battery: Up to 50 minutes
  • Working time on AK 20 battery: Up to 100 minutes
  • Working time on AK 30 battery: Up to 130 minutes


Quiet technology

The STIHL AK System tools are so quiet you don't even need to wear ear protection.

Carrying handle

The HSA 50 can only be operated with two hands so you are always in control. The soft-grip front handle can be operated from all sides so that you can work at exactly the right angle for your hedges.

Neutral battery position

There are two positions for the battery - in the first neutral position, the battery is secured in the machine but is not connected to the contacts. This means you can carry the battery around easily without accidentally starting the trimmer. In the second position, the battery is fully pushed in and you can easily start the tool.

Blade tip protector

The HSA 50 comes with a tip protector fitted as standard, which makes cutting near the ground or along walls easier, and helps to protect the blades from damage.

Double sided cutting blades

The blades on the HSA 50 are diamond ground so you can achieve a neat finish on your hedges. The HSA 50 has integrated cut protection which overlaps the working blades, to reduce the risk of the blades making contact with your leg.

Hanging eyelet

The HSA 50 can be easily hung up in the garage or shed using the hanging eyelet.

AL 101 charger

Charger for the STIHL AK Cordless System. With operating mode indicator (LED) and cable tie with Velcro tape. The charger can be wall mounted if required.


QHow long does the battery last?

A: The battery will last up to 50 minutes on one charge. This does depend on what is being cut and how the tool is being used.

QHow long does it take to charge?

A: To fully charge an AK 10 battery it takes 80 minutes, or to charge it up to 80%, it takes 55 minutes.

QWhat size garden will it maintain?

A: The HSA 50 is great for medium to large gardens.

QWhat battery does it use?

A: The tool is powered by an interchangeable 36V Lithium-Ion battery.

QAre the batteries interchangeable?

A: Yes, all of the tools in the AK System use the same style of battery. There are three different batteries in the range, which all have different capacities. For the HSA 50, we recommend the smaller capacity AK 10 battery as it is lighter and means the tool is perfectly balanced, but you can use the AK 20 and AK 30 battery in this tool.

QHow long is the blade on the HSA 50?

A: The blade is 50cm long.

QWhat should I wear when using this hedge trimmer?

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

QWhat size branches can I cut with the HSA 50?

A: You can cut branches up to 16mm in diameter.

QDoes the hedge trimmer come with a blade cover?

A: Yes, your hedge trimmer comes with a scabbard to cover the blades during transport or storage. On new machines, the scabbard will be quite tight so you may need to use some force to remove it for the first few times. Just hold the scabbard about half way down and pull it away from you so your hands or body cannot come into contact with the blades.


#1Using the HSA 50

You will get a straighter cut on your hedges, if you move the hedge trimmer in an upwards motion when trimming. The HSA 50 has a handy tip protector at the end of the blades - this means you can trim closer to the ground without damaging the blades.

#2Cleaning your HSA 50

When you have finished using the hedge trimmer, remove the battery. We suggest spraying a little resin solvent, like STIHL Superclean, onto the blades to remove sap or resin, protect them from corrosion and stop them getting stuck together.

#3Looking after your battery

Don't use a damp or wet battery in your HSA 50 and avoid using them in extreme temperatures (very hot or very cold). To find out more about looking after your battery, read our blog post.

#4Storing your HSA 50

Store your HSA 50 in a clean and dry area and keep out of the reach of children at all times.

#5Check for wildlife

Don’t forget to check your work area for wildlife before starting to use your tool. In particular, you should check for nesting birds before trimming hedges, as well as checking for other small animals such as hedgehogs before trimming long grass.

Technical Specifications


Rated voltage 36 V
Run time with AK 10 battery 1) up to 50 min
Run time with AK 20 battery 1) up to 100 min
Weight 2) 2.9 kg
Cutting length 50 cm
Total length 101 cm
Tooth spacing mm 30 mm
Sound power level 3) 89 dB(A)
Sound pressure level dB(A) 3) 78 dB(A)
Vibration value, left 4) 2.0 m/s2
Vibration value, right 4) 1.6 m/s2

1) Battery working times are approximate and may vary depending on application. 2) Without battery 3) Uncertainty (K) factor according to DIR 2006/42/EC = 2.0 (dB(A) 4) Uncertainty (K) factor according to DIR 2006/42/EC = 2 m/s²

STIHL Factory


Andreas Stihl founds an engineering office in Stuttgart and develops his own chainsaw.

STIHL Logo 1928


STIHL becomes a brand. The name represents the ceaseless quest of the engineer and company founder Andreas Stihl to ease the heavy labour of forestry work with his inventions.

STIHL Chainsaw 1930


STIHL presents his portable petrol-powered chainsaw at the Leipzig trade fair – it is well received and orders flow in from across Europe.

Learn more about the history of STIHL

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