The greenworks gd40cs15 cordless chainsaw has a brushless motor which is powered by either a 2ah or 4ah 40v lithium ion battery'. '.strtoupper('t')he gd40cs15 has a 40cm 16 inch guide bar and uses oregon chain'. '.strtoupper('t')he gd40cs15 has enough power to cut branches with ease and on one full charge can cut 150 10 x 10 pieces of wood'. '.strtoupper('c')an cut up to 30″ logs'. '.strtoupper('b')attery powered chainsaws are quiet and produce fewer emissions than petrol models'. '.strtoupper('t')hey give the freedom to move around without mains electric cables so all areas of the lawn and garden can be reached'. '.strtoupper('t')he powerful digipro brushless motor can give true petrol performance with no carbon emissions'. '.strtoupper('t')he brushless motor delivers up to 30% more torque and can reduce vibration by up to 70%'. '.strtoupper('t')he automatic oiler applies chain oil to the bar and chain which extends the life of the chain and provides durability'. '.strtoupper('t')here is a cushioned grip on the handle for more comfortable use and a translucent oil tank so you can tell how much oil you are using. the greenworks gd40cs15 uses a professional oregon bar and chain and features a chain brake and low kickback chain for extra user safety'. '.strtoupper('o')ne battery is designed to fit all the 40v gardening tools in the greenworks range'. '.strtoupper('5')0 minutes runtime 4ah battery, 25 minutes runtime 2ah battery'. '.strtoupper('t')his kit includes 2ah battery and a 2a charger.