The COMPACT Cordless System is powered by three 36 V Lithium-Ion batteries, STIHL AK10, AK20 and AK30. The high quality cells are aligned in a way so constant power is delivered to the tool over impressive run times. The compact and light design of the batteries results in a low tool weight during use, making the system a versatile choice for a variety of gardening tasks. The interchangeable nature of the AK batteries with compact cordless tools offers an economical solution to domestic garden maintenance. With a range of four tools suitable for grass trimming to cutting small logs, there is a cordless machine for every job in the garden