STIHL GTA 40 – AS System

STIHL GTA 40 – AS System Review: Professional Battery-Powered Pruner for Precision Cutting

This review explores the STIHL GTA 40 – AS System, a professional-grade, battery-powered pruner built for clean, controlled cuts in tree and shrub care. We cover who it’s ideal for, standout features, confirmed specifications, how it compares to similar compact pruners, practical usage tips, and clear answers to the most common search questions. The model is available either as a complete set with batteries and charger or as a tool-only option to suit different purchasing preferences.

Who the STIHL GTA 40 – AS System is for

The GTA 40 is designed for professionals who value precision, control, and reliability in demanding environments. It’s a superb choice for arborists, horticulture and landscaping teams, and trades working with wood on construction sites. Ground work is effortless and efficient, and the tool’s configuration and attachment ring also support aerial workflows for trained arborists. Property managers and serious garden enthusiasts who want pro-level results will appreciate the compact form, refined ergonomics, and consistent performance from start to finish.

Key features

Pro-focused battery platform with dual power: As part of the AS System, the GTA 40 runs on 2x AS 2 lithium‑ion batteries that discharge in parallel to deliver steady output. Intelligent CONSTANT POWER electronics maintain performance as charge levels change, helping each cut feel smooth and predictable.

Brushless EC motor and ¼” PM3 chain: A highly efficient EC engine drives a Picco Micro 3 1/4″ P chain for clean, fast cuts. The variable chain speed gives you nuanced control, letting you ease into branches and ramp up through the cut for a refined finish.

Automatic chain lubrication: The integrated oiling system keeps the bar and chain supplied for consistent cutting. A tool‑free oil tank cap with a bayonet closure makes top‑ups quick, and the reservoir is sized for long stints—sufficient for work sessions aligned with multiple AS 2 battery swaps.

Easy chain tensioning and service-friendly design: Side‑mounted chain tensioning speeds up adjustments with better tool protection. Captive nuts on the sprocket cover prevent loss during maintenance, keeping your setup organized.

Ergonomics for control and comfort: A soft, rubberized main handle and an upper grip provide two-handed stability. A claw‑shaped deflector separates the upper grip from the cutting attachment, helping your hand placement stay consistent. Ambidextrous operation is supported via a rocker on both sides, making it comfortable for right- and left‑handed users.

Work-anywhere confidence: The GTA 40 and AS 2 batteries are certified to IPX4, providing splashwater protection for daily use in adverse weather. An LED charge‑level indicator on the top of the tool keeps runtime status easy to see and plan around.

Fast, simultaneous charging: With the supplied AL 5‑2 high‑speed charger in the set configuration, two AS 2 batteries can be recharged simultaneously in approximately 50 minutes, maximizing uptime between tasks.

On‑person access: An attachment ring makes it simple to hook the pruner to a belt or harness for quick retrieval on the ground or in the air. A dedicated holster is available separately for even faster access.

Included in the set: 15 cm / 6″ Light guide bar, Picco Micro 3 1/4″ P chain (1.
1 mm, 38 drive links), and an attachment ring—everything you need to get to work with compact power and precision.

STIHL GTA 40 – AS System specifications

• Rated voltage: 22 V
• Power: 0.
  41 kW
• Battery system: AS (uses 2x AS 2 batteries in parallel)
• Device weight without battery: 1.
  4 kg
• Bar length: 15 cm / 6 in
• Chain pitch: 1/4″ P
• Groove width: 1.
  10 mm
• IPX rating: IPX4 (splashwater protection)
• Max. cuts per battery charge (AS 2): up to 240 cuts (on 5 cm branches)
• Sound pressure level: 82 dB(A)
• Sound power level: 90 dB(A)
• Vibration level, left: 4.
  5 m/s²
• Vibration level, right: 4.
  2 m/s²
• Charging: AL 5‑2 high‑speed charger (simultaneous charging of 2x AS 2 in approx.
  50 min)
• Chain lubrication: Automatic, with tool‑free oil tank cap (bayonet closure)
• Chain tensioning: Side‑mounted, with captive sprocket cover nuts
• Controls: Ambidextrous rocker; two‑handed operation
• Runtime indicator: Top‑mounted LED charge‑level indicator

STIHL GTA 40 – AS System vs similar models

Within compact battery pruners, the GTA 40 stands out for its pro‑leaning design: dual AS 2 batteries working in parallel, an EC motor tuned for efficiency, and IPX4 splash protection. Compared with more compact, entry‑level hand pruners in the same family, the GTA 40 emphasizes higher cutting performance, a longer 6″ bar, and control‑centric ergonomics for frequent use. It’s a strong fit if you want consistent power delivery, rapid dual‑battery charging, and features that streamline professional workflows such as side chain tensioning, captive nuts, and on‑person carry options.

Usage tips

1. Use two hands: keep one hand on the main handle and one on the upper grip for confident control, taking advantage of the claw‑shaped deflector for hand separation.
2. Start smooth, then accelerate: use the variable chain speed to ease into the cut before increasing speed for a clean finish.
3. Check chain tension regularly: adjust via the side‑mounted tensioner; captive nuts make cover removal straightforward.
4. Top up chain oil before long sessions: the tool‑free bayonet cap speeds refills and supports consistent lubrication.
5. Plan runtime with the LED indicator: glance at the top‑mounted display to schedule swaps and charging.
6. Charge both AS 2 batteries together: the AL 5‑2 high‑speed charger brings two packs up in about 50 minutes to minimize downtime.
7. Carry it securely: clip the attachment ring to a belt or harness; pair with the dedicated holster for rapid access.
8. Maintain the bar and chain: keep the PM3 chain sharp and properly lubricated for the most efficient, clean cuts.

Frequently asked questions

What is included in the STIHL GTA 40 set?

The set includes a 15 cm (6″) Light guide bar, a Picco Micro 3 1/4″ P chain (1.
1 mm, 38 drive links), an attachment ring, two AS 2 batteries, and the AL 5‑2 high‑speed charger.

What batteries does the STIHL GTA 40 use?

It uses 2x AS 2 lithium‑ion batteries from the AS System, which discharge in parallel for consistent power.

Can the STIHL GTA 40 run on one battery?

No. The tool is designed to operate with two AS 2 batteries installed and cannot be used with only one battery.

How many cuts does the STIHL GTA 40 make per charge?

Up to approximately 240 cuts on 5 cm branches per AS 2 battery charge, under the tested conditions.

How long does it take to charge STIHL AS 2 batteries with AL 5-2?

About 50 minutes to simultaneously recharge two AS 2 batteries using the AL 5‑2 high‑speed charger.

Does the STIHL GTA 40 have automatic chain lubrication?

Yes. It features automatic chain oiling, and the oil tank has a tool‑free bayonet cap for quick refills.

Is the STIHL GTA 40 waterproof?

It is IPX4 certified for splashwater protection, suitable for daily use in adverse weather conditions.

What is the bar length on the STIHL GTA 40?

15 cm (6 inches).

How much does the STIHL GTA 40 weigh?

The device weight without battery is 1.
4 kg.

Does the STIHL GTA 40 have side chain tensioning?

Yes. It uses side‑mounted chain tensioning, with captive nuts on the sprocket cover for secure, convenient servicing.