This higher performance AL-KO 5ah lithium battery uses Samsung fuel cells to produce up to 180Wh of power. Designed and marketed by AL-KO as a 40v battery it fits all the Energyflex 36v gardening equipment from the lawnmowers to the hand held tools. It can increase the running time of the Energy Flex machines by up to 33%. Depending on the tool and working conditions it can supply power for up to 140 minutes and charges in just 120 minutes. Features an integrated LED display with charging / recharging information. The battery has a 2 year manufacturer warranty.