STIHL HSA 66 – Battery Hedge Trimmer

Modern battery hedge trimmer.

The STIHL HSA 66 Lithium-Ion hedge trimmer features a 36-volt lithium-ion battery and delivers strong, quiet cutting performance. Another tool in the STIHL Battery-Powered Equipment line, the HSA 66 runs on the same universal battery shared by all battery-powered tools. Its energy-efficient design allows for up to 40% longer run times when compared to the previous model. And as always, there’s no gradual drop in performance – it runs at full power until the battery is fully depleted. The HSA 66 is also a full pound lighter than the previous model, making it less fatiguing and easier to maneuver for landscaping professionals. And because there is no gasoline, no fuel cost, and no restrictive power cords, the HSA 66 delivers an excellent combination of performance and efficiency. The STIHL HSA 66 also has no exhaust emissions and is four times quieter than its gasoline-powered equivalent, making it an excellent alternative in environmentally sensitive areas.

The HSA 66 features optimized blade geometry and diamond-ground blade edges for clean cuts, even through thick and tough shrubbery. The 20” blade length is an efficient working length for most applications and a tip protector helps protect blade tip from damage. The HSA 66 lithium-ion hedge trimmer is a great choice for professionals interested in both controlled sculpting and general hedge trimming tasks.

Run time may vary based on battery type, charge level and capacity, model, operating style, and conditions. Batteries and chargers can be purchased separately or as a combined set with a tool.

Stihl HSA 66 Features

Stihl HSA 66 Caring for Nature

Reduced-Emission Engine Technology – Caring for Nature

The STIHL Inc. “Caring for Nature” seal identifies its powered products that are more environmentally conscious, producing zero or low exhaust emissions. STIHL Inc. defines “low exhaust emissions” as being cleaner than EPA and/or CARB exhaust emission standards.

Stihl HSA 66 Caring for Nature

Ergonomic Loop Handle

The ergonomic loop handle is ideal for making cuts in any direction.

Stihl HSA 66 Tip Protector

Tip Protector

The tip protector makes cutting near the ground or along walls easier while protecting the trimmer’s cutters from damage.

Stihl HSA 66 Blade Scabbard

Blade Scabbard

The blade cover helps protect the cutting blade during storage and transport.

Stihl HSA 66 Double-Sided Blades

Double-Sided Cutting Blades

Stihl hedge trimmers with double-sided cutting blades cut in both directions.

Stihl HSA 66 Two-Handed Switching

Two-Handed Switching

Simultaneously pressing both switches on the arc and rear handle makes the tool easy to start. The rear lever infinitely adjusts the speed of the blades – for fine and precise cutting. Particularly practical.

Stihl HSA 66 EC Motor Technology

Stihl EC Motor Technology

Stihl’s brushless electric motor (EC) operates with efficient energy use and almost no wear and tear, thanks in part to the Stihl EC pre-wired electronics. As an intelligent control panel, it detects the battery inserted in the tool at any moment and supplies the EC motor with the required energy. This ensures that optimum power is always available to the tool. This is constant throughout the entire battery discharge period.

Stihl HSA 66 Funtional Design

Functional Design

The housing has smooth surfaces and round contours that help to keep it from getting caught on branches during use. The design also makes cleaning easy.

Stihl HSA 66 Vertical Hanging Slot

Vertical Hanging Slot

The built-in hanging slot allows for easy storage when not in use.

Additional Equipment

Stihl HSA 66 Lithium-Ion Batteries

Lithium-ion Batteries

High-quality lithium-ion batteries are compatible with all STIHL / VIKING cordless tools in various capacities. The battery can be recharged many times without memory effect and with constant power throughout the entire operating time.

Stihl HSA 66 Chargers


Standard AL 100 charger for AP batteries (passively cooled) or fast charger for AP and AR batteries (actively cooled).

Stihl HSA 66 Specs

SpecificationHSA 66
Power SourceBattery
Weight6.8 lbs
Weight (w/ AP100)8.6 lbs
Blade Length20 in
Strokes per Minute3 000
Tooth Spacing1.2 in
Battery SeriesAP Series
Run Time (w/ AP 100)60 min

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