Description
STIHL AP 20 Battery: lightweight power for selected AP System tools
The STIHL AP 20 Battery combines a 36V rated voltage, 144Wh energy content and a low 1.3kg battery weight. It is designed for domestic, semi-professional and professional users who want a compact battery for compatible lighter-duty tools in the STIHL AP System.
The AP 20 includes four LED charge indicators, IPX4 splashwater protection and STIHL intelligent electronics that help compatible tools maintain consistent power as the battery charge falls. Its cold-start function protects and warms the cells before delivering full output in very low temperatures.
Browse the complete STIHL AP System range at Masseys or view all STIHL cordless machinery.
Key benefits of the STIHL AP 20
- 36V, 144Wh lithium-ion battery: useful capacity for selected lighter and medium-duty AP System tools.
- Low 1.3kg weight: helps reduce the total working weight of handheld and long-reach equipment.
- Constant power electronics: designed to maintain consistent tool performance as the battery discharges.
- Four LED indicators: display the battery’s remaining charge and charging status.
- IPX4 rated: protected against splashwater from all directions for appropriate outdoor working conditions.
- Cold-start function: controlled cell warming supports operation at temperatures down to approximately -20°C when used in accordance with STIHL guidance.
- Compatible charger choice: works with the STIHL AL 101, AL 301, AL 301-4 and AL 501 chargers.
Is the STIHL AP 20 right for your tool?
Choose the AP 20 when reducing battery weight is a priority and STIHL lists your chosen tool as compatible. This can be especially valuable for hedge trimming, long-reach work and spraying, where a lighter battery helps reduce overall tool weight.
For tools with greater energy or power requirements, a larger battery such as the STIHL AP 200 S, STIHL AP 300 S or STIHL AP 500 S may be more appropriate.
STIHL AP 20 compatibility examples
The following examples are based on current STIHL UK compatibility guidance. Product ranges and compatibility can change, so confirm your exact tool model before ordering.
Examples that can use the AP 20 at full power
- STIHL HSA 100 Cordless Hedge Trimmer
- STIHL HSA 140 R Cordless Hedge Trimmer
- STIHL HLA 66 Long-Reach Hedge Trimmer
- STIHL SGA 85 Cordless Sprayer
Examples that operate at reduced power with the AP 20
Compatibility warning: the STIHL AP 20 cannot be used with every tool in the AP range. For example, current STIHL guidance states that it cannot be used with the STIHL REA 100 pressure washer. Contact Masseys if your model is not listed or you are uncertain which battery to choose.
Technical specifications
| Product | STIHL AP 20 Battery |
|---|---|
| Battery platform | STIHL AP / ALLPRO professional battery system |
| Battery technology | Lithium-ion |
| Rated voltage | 36V |
| Maximum voltage | 40V |
| Energy content | 144Wh |
| Rated capacity | 3.9Ah to IEC 61960; commonly described as 4.0Ah |
| Battery weight | 1.3kg |
| Protection rating | IPX4 splashwater protection |
| Charge display | Four LED indicators |
| Compatible chargers | STIHL AL 101, AL 301, AL 301-4 and AL 501 |
| Manufacturer part number | 48504006536 |
| GTIN / EAN | 0198520017957 |
Charging the STIHL AP 20
The AP 20 can be charged using the STIHL AL 101, AL 301, AL 301-4 or AL 501. The best charger depends on how quickly you need the battery returned to service and whether you need to charge one or several AP batteries.
View the complete range of STIHL battery chargers at Masseys. Refer to current STIHL charger data for exact charging times and charge percentages.
Why Masseys recommends the STIHL AP 20
Masseys recommends the STIHL AP 20 when low battery weight is a priority and the intended tool is listed by STIHL as suitable for the battery. At 1.3kg, it can make a noticeable difference to the overall weight of handheld and long-reach equipment, particularly during hedge trimming, spraying and repeated stop-start work.
It is not the best battery for every AP System tool. Customers who need maximum runtime, who use high-demand equipment or whose tools only deliver reduced performance with the AP 20 should consider the AP 200 S, AP 300 S or AP 500 S instead. As a STIHL authorised dealer, Masseys can help match the battery and charger to your exact tool and workload before you buy.
Why buy from Masseys?
- STIHL authorised dealer supplying genuine batteries, chargers and machinery.
- Practical advice on battery compatibility, runtime and charger selection.
- Large STIHL cordless display at our Woodville, Swadlincote store.
- On-site garden-machinery workshop for servicing, repair and warranty support.
- Order online or visit Masseys seven days a week.
Frequently asked questions
Is the STIHL AP 20 compatible with every AP System tool?
No. Some tools operate at full power with the AP 20, some operate at reduced power, and some cannot use it. Always check the current STIHL compatibility table for your exact model.
What is the main advantage of the AP 20?
Its principal advantage is low weight. At 1.3kg, it is one of the lighter batteries in the professional STIHL platform and can reduce fatigue when used with suitable handheld or long-reach tools.
Can the STIHL AP 20 be used in wet weather?
The battery is IPX4 certified for splashwater protection. It should still be used, stored and charged in accordance with the STIHL instruction manual and safety guidance.
Which chargers work with the AP 20?
The AP 20 is compatible with the STIHL AL 101, AL 301, AL 301-4 and AL 501 chargers.
Should I choose the AP 20 or a larger STIHL battery?
Choose the AP 20 when your tool is compatible, your work is relatively light or moderate, and reducing battery weight is important. Choose a higher-capacity battery for longer working periods, high-demand tools or equipment that only delivers reduced performance with the AP 20.
For the latest manufacturer-level compatibility and specification information, consult the official STIHL UK AP 20 product information before ordering.
