This set comes with the larger battery which lasts for up to 16 hours. With the Power Blade series Felco offers users a new generation of tools. # The XPro blade guarantees great speed and cutting precision whilst the design of hand-piece has been improved to maximise comfort. # The new battery carrying system (backpack) is fully adjustable ensure maximum comfort. # The new lithium ion batteries have increased the life of the batteries by up to 25%