I got tired of getting the electrical cords and finding the nearest electrical outlet to prune my trees with my corded electric chainsaw. With the Black & Decker Cordless pole saw, it's ready to cut as long as I have enough charged 18 volt batteries. With 3 fully charged batteries, I can cut for an hour. The pole saw is easy to use. Just press the release button and pull the trigger to get the chain saw spinning at the end of the pole. The batteries are easy to replace, just push a button and slide the battery off the unit. The saw is lightweight enough to hold up to the tree limbs for several minutes. The pole comes with an extension piece so you can reach up to 12 ft. The chain saw works well for limbs up to 4". As a added bonus, you can use the batteries on other Black and Decker cordless tools.