The g40cs30 cordless chainsaw from greenworks is fitted with a brushed motor and powered by either a 2ah or 4ah 40v lithium ion battery. This chainsaw has enough power to cut branches with ease and with one full charge can cut 100 10 x 10 pieces of wood. featuring a 30cm 12 guide bar and oregon chain. With an automatic oiler that applies chain oil to the bar and chain. This extends the life of the chain and provides durability. The translucent oil tank indicates how much oil you have used. a cushioned grip on the handle provides user comfort. up to 103 minutes with one 2ah 72w battery. With one battery designed to fit all 40v gardening tools in the greenworks range. battery powered chainsaws are quiet and produce fewer emissions than petrol models. Giving freedom to move around without cables so all of the garden can be reached with ease. please note battery and charger are not included available as optional extras. manufacturer's warranty 2 years domestic