The power source in cordless hedge trimmers is rechargeable batteries. Nowadays with the presence of Lithium Ion batteries that deliver great power and have excellent run-time , the user can do the job of Trimmer perfectly well , with cordless hedge trimmers. They are compact and light weight and usually equipped with battery charger level indicator. As cordless hedge trimmers have no power cord to limit the distance of the operating , the users are be able to move freely anywhere they need to go. They are also safe because there is no risk of electric shock. Most people can take care of their hedge trimming needs with a single charge but if it was not sufficient and you can not wait for the battery to be recharged , spare batteries are always helpful.