The stihl fsa 90 is powered by the stihl lithium pro battery range and comes fitted with an ec brushless motor. Brushless motors work with greater efficiently than brushed versions and they run quietly with minimal vibration. Cordless power allows the user to work cable free, emission free and with minimal running costs. The lithium pro batteries match the power of petrol engines, but without the noise and maintenance costs. Battery operated tools are very popular with groundsmen and contractors working in noise sensitive areas such as schools and hospitals.stihl recommend the ap 300 battery sold separately which will run the fsa 90 for 45 minutes on a single charge. If you are a contractor working on larger areas purchasing a second battery is a productive way of working for longer periods. To increase battery life and ensure the tool stays disconnected until you need it, there is a two stage system to connect the battery the 1st stage sit the battery in position so it can safely transported, the 2nd stage connects the battery ready for use.the fsa 90 r has a soft grip loop handle which is ideal for working in areas where there are a lot of obstacles and trees and also narrow spaces. Stihl’s autocut 25 2 trimmer head has a durable 2.4mm nylon line and the head can be attached without the need to remove the casing. Autocut heads release extra line by tapping the head on the ground. The fsa 90 r is supplied with a basic harness and a hanging loop for storage.battery and charger not included.running timesap 300 battery up to 30 minutescharging time for the ap 300al 300 charger 75 minutesal 500 charger 35 minutesspecificationpower 36v lithium ion batterypower ec brushless motorcutting head bump feed, autocut mowing head 25 2handle loop ecospeed technologyharness basic harnesstool protectionvibration levels 1.4 m s² noise levels 84dbaweight net 2.8kgwarranty 2 years domestic, 1 year commercial