AK System: for medium-sized to larger gardens
Powerful, lightweight and easy-to-use battery system for home gardeners.
10.08.2026
Advantages of the AK system
- Powerful – Ideal for medium-sized gardens and more demanding gardening tasks
- Versatile – One battery can be used across a wide range of compatible tools
- Comfortable to use – Lightweight, balanced design for easy handling
- Long working times – Reliable battery power for extended periods of work.
AK System tools
STIHL battery technology in the AK system
Key features of the AK system
AK system batteries and chargers
Specifications of the batteries in the AK-System
| AK 10 | AK 20 | AK 30 S | |
|---|---|---|---|
| Battery weight | 0,8 kg | 1,2 kg | 1,3 kg |
| Energy content | 72 Wh1) | 144 Wh1) | 180 Wh1) |
| Max. power | + | ++ | ++ |
| Equipment and function | CONSTANT POWER - |
CONSTANT POWER - |
CONSTANT POWER POWER BOOST |
1) Energy content according to the cell manufacturer's specifications. To increase service life, the energy content available in the actual application is lower.
Comparison of the technical details of our AK system chargers
The following table for the AK system gives you an overview of the technical details regarding charging processes and performance.
| AL 101 | AL 301 | |
|---|---|---|
| Charging times 80% / 100% e.g. AK 30S | 160 min / 205 min | 35 min / 60 min |
| Power consumption | 0.08 kW | 0.3 kW |
| Charging current | 1.6 A | 6.5 A |
STIHL AK system
The AK System is designed for home gardeners who want the flexibility to tackle a wide range of outdoor tasks. From mowing the lawn and trimming hedges to pruning trees and cutting firewood, AK System tools combine reliable battery power with easy handling. With one interchangeable battery powering multiple compatible tools, it's a versatile solution for medium-sized to larger gardens.
See the AK System in action
Watch our AK System video playlist to see how these tools can help with a wide range of everyday garden tasks, from trimming hedges and shaping lawn edges to tackling larger outdoor projects.
What can you use the AK System for?
With their long working times and impressive power, STIHL AK system products are ideal for tackling a wide range of gardening jobs from mowing the lawn and trimming lawn edges to looking after hedges.
Flexible battery power: the power of the AK system
Want to know how much you can do with a fully charged AK system? The table below provides examples of how the powerful AK batteries combined with our AK system power tools will perform in your everyday work.
You can also find more detailed information on our working and charging times.
| Tool | Usage | AK 10 (72 Wh) |
AK 20 (144 Wh) |
AK 30 S (180 Wh) |
|---|---|---|---|---|
| MSA 60 C-B | When sawing square timber (10 x 10 cm) up to ... cuts | 60 cuts | 160 cuts | 190 cuts |
| MSA 70 C-B | When sawing square timber (10 x 10 cm) up to ... cuts | 60 cuts | 160 cuts | 210 cuts |
| HTA 50 | When sawing square timber (10 x 10 cm) up to ... cuts | 80 cuts | 170 cuts | 220 cuts |
| FSA 57 | Lawn edges up to ... m Lawn areas up to … m² |
625 m 125 m² |
1,250 m 250 m² |
1,500 m 300 m² |
| FSA 60 | Lawn edges up to ... m Lawn areas up to … m² |
500 m 100 m² |
1,250 m 250 m² |
1,500 m 300 m² |
| HSA 50 | Up to ... m² of hedge | 175 m² | 350 m² | 420 m² |
| HSA 60 | Up to ... m² of hedge | 220 m² | 490 m² | 560 m² |
| HLA 56 | Up to … m² of hedge | 190 m² | 380 m² | 460 m² |
| BGA 57 | Dry leaves on asphalt: up to ... m² | 380 m² | 760 m² | 900 m² |
| SHA 56 | In vacuum mode up to ... m²/ In blower mode up to ... m² |
38 m²/ 300 m² |
75 m²/ 600 m² |
90 m²/ 700 m² |
| RMA 235 | Lawn areas up to … m² | 150 m² | 300 m² | 400 m² |
| RMA 248 | Lawn areas up to … m² | 100 m² | 200 m² | 250 m² |
| RMA 239 / RMA 239 C | Lawn areas up to … m² | 120 m² | 250 m² | 330 m² |
| RLA 240 | Lawn areas up to … m² | 96 m² | 190 m² | 250 m² |
| REA 60 PLUS | Working time up to … minutes | 25 minutes |
AK system: Frequently asked questions
The STIHL AK System is a versatile battery system designed for home gardeners. Ideal for medium-sized to larger gardens, it combines reliable battery power with a wide range of compatible tools, helping you tackle everything from mowing lawns and trimming hedges to pruning trees and maintaining outdoor spaces.
The AK 20 is one of the batteries in the STIHL AK System. Offering a balance of runtime, performance and weight, it sits between the AK 10 and AK 30 S in the range. This makes it a popular choice for a wide variety of gardening tasks, providing more energy than the AK 10 while remaining lightweight and easy to handle.
This is how the batteries compare in terms of energy content and weight:
- AK 10 (72 Wh at 0.8 kg)
- AK 20 (144 Wh at 1.2 kg)
- AK 30 S (180 Wh at 1.3 kg).
The working time of an AK 20 battery will vary greatly depenging on the tool you're using and the task you're carrying out. As a guide, the AK 20 can provide up to 100 minutes working time on a single charge when used in a HLA 56, which ras a relatively low energy consumption. To find the estimated runtime for a specific tool, take a look at the STIHL battery working time table, which shows runtimes across the AK System range.. You can find an overview of the runtimes here.
The AK System is designed for home gardeners and is ideal for medium-sized to larger gardens, offering a versatile range of tools for everyday garden maintenance.
The AP System is built for professional users and home gardeners maintaining large gardens, delivering higher performance, longer runtimes and a wider range of tools for demanding applications.
No. The AK and AP systems are separate battery platforms and are not compatible with each other. AK System tools can only be used with AK System batteries, while AP System tools can only be used with AP System batteries.
Various power tools such as the BGA 60 battery leaf blower, the MSA 70 battery chainsaw or the HTA 50 battery pole pruner belong to the STIHL AK system.
