Compatible with the tools in the STIHL AK System, the AK 20 is a lightweight 36 V lithium-ion battery. It features a charge level indicator on the top with four LEDs, so you can see how much charge you have left quickly and easily, at the touch of a button. This is the recommended battery for the MSA 120 C-BQ chain saw and the BGA 57 blower and has been designed to balance perfectly with these tools.
- Runtime on recommended battery: The runtime for this battery depends on which tool you are using it in.
- Charging time: To fully charge an AK 20 battery using the AL 101 charger takes 180 minutes, but you can charge it up to 80% in 135 minutes.
Features
LED charge level indicator
There are four LEDS on the battery to indicate the charge level of the battery. Simply press the button to see how much battery life is left.
Intelligent electronics
STIHL batteries feature an intelligent battery management system - this advanced technology gives a constant level of power whether the battery is 100% charged or 1% charged. To find out more about the intelligent electronics in our battery visit www.stihl.ca.
FAQs
Question: What tools can I use this battery in?
A: This battery will fit in any of the tools in the AK System. However, it is the recommended battery for the MSA 120 C-BQ and the BGA 57.
Question: How long does it take to charge?
A: To fully charge an AK 20 battery using the AL 101 charger takes 150 minutes, but you can charge it up to 80% in 105 minutes.
Question: Can I charge it any quicker?
A: We make two fast chargers, the AL 300 and AL 500. The AL 300 charger will charge this battery to full capacity in 55 minutes.
Tips
#1 Looking after your battery
Don't use a damp or wet battery in your tools and avoid using them in extreme temperatures (very hot or very cold).
#2 Storing your battery
Take your battery out of the tool you have used it in and store it separately in a clean, dry place out of direct sunlight and ideally in some packaging, such as cardboard, to protect it, at a temperature between -10°C and 50°C. Don't forget to keep it out of reach of children.
Technical data
| Battery cell technology | Lithium-Ion |
| AK 20 Battery weight KG / LB | 1.2 / 2.7 |
| AK 20 Battery energy WH | 118 |
| AK 20 Rated voltage (V) V | 36 |
STIHL - Quality tools since 1926
1927
Andreas Stihl founds an engineering office in Stuttgart and develops his own chainsaw.
1928
STIHL becomes a brand. The name represents the ceaseless quest of the engineer and company founder Andreas Stihl to ease the heavy labour of forestry work with his inventions.
1930
STIHL presents his portable petrol-powered chainsaw at the Leipzig trade fair – it is well received and orders flow in from across Europe.