STIHL AK 20 Lithium-Ion Battery delivers dependable power and enhanced performance for your AK System tools. This redesigned battery increased performance d to the previous model and runs at full power throughout its entire run time. Its compact, lightweight design makes it easy to handle, while an easy-to-read LED display indicates the battery charge level. The AK 20 battery is also designed to minimize power loss during storage, ensuring readiness when you need it most. It is compatible with select AK System tools, providing optimal run times for the MSA 120 C-B, FSA 60 R, HLA 56, HTA 50, BGA 57, and SHA 56. Equip your tools with the STIHL AK 20 for reliable power and long-lasting performance. Model Number: AK 20