AK system: For demanding projects
The AK system impresses with high performance and endurance. The compact battery power tools are lightweight, handy and ergonomic.
10.04.2025

Advantages of the AK system
The battery of the AK system can be flexibly combined with different power tool categories.
- Powerful: Suitable for medium-sized gardens and ambitious tasks.
- Versatile application: Compatible with a wide range of garden tools.
- Ergonomic: Comfortable handling thanks to a lightweight and perfectly executed design.
- Long runtime: Batteries provide sufficient energy for longer applications.
Power tool categories in the AK system
STIHL battery technology in the AK system
Equipment and function of the AK system
AK system batteries and chargers

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 stands for efficient power and ease of use. AK batteries are easy to combine with all the power tools in the AK system. Many applications are possible, ranging from grass trimmers to hedge trimmers.

From lawn trimmers to hedge trimmers, the AK system includes what you need for many applications around the home and garden. Discover the AK system tools in our video playlist. Get an overview and see how selected devices from the AK system effortlessly trim high hedges and create crisp lawn edges, for example.
Battery products in application
Are you passionate about gardening and looking for a flexible solution for ambitious gardening tasks? With their endurance and power, STIHL AK system products are sure to be a good choice for you – whether it’s mowing the lawn, trimming lawn edges or 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 ... minutes and ... m²/ In blower mode up to ... minutes and … 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 |
All questions and answers about the AK system
The STIHL AK system is a powerful battery power system for ambitious gardening tasks within domestic applications.
“STIHL AK 20” stands for a battery from the AK system, which is positioned between the other two batteries in the system in terms of energy content and weight (144 Wh at 1.2 kg): the AK 10 (72 Wh at 0.8 kg) and the AK 30 S (180 Wh at 1.3 kg).
The STIHL AK 20 is operational up to 100 minutes after charging – depending on which power tool it is used in from the AK system. You can find an overview of the runtimes here.
The STIHL AK system is suitable for ambitious gardening tasks in domestic applications, while the STIHL AP system is designed for daily professional use.
No, the AK and AP systems are not compatible with each other. The power tools from the AK system may only be used with the batteries from the AK system. The same principle applies to the AP system.
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.