To make the battery life last longer in an electric screwdriver, always charge the battery fully, then use the screwdriver until the battery runs out. Don’t leave the battery charging longer than necessary, and do not remove the battery from the charger if it has only a partial charge. When storing the electric screwdriver, store away from high heat or freezing temperatures. Also avoid storing the battery near magnetic objects and metals, as these materials can seep power from the battery.