Allow us to introduce you to your favorite new tool ? the WORX cordless 40-volt MAX lithium powered 12? cordless chainsaw. The ultra-powerful, ultra-efficient 40V Share Volt battery delivers extra power to tackle even the toughest cutting tasks and extend runtime. The 12-inch bar give you plenty of reach for challenging cuts while also maintaining a friendly, usable size for novice chainsaw operators. Speaking of novice operators, an innovative auto tensioning system that keeps the chain tight and safe during use will benefit new and expert users alike. You?ll feel like you can cut all day, thanks to an overmold soft grip handle that gives you the utmost comfort and control and also reduces fatigue you would otherwise feel with a less cushioned handle. In addition to the auto tension feature, the chain is also treated to an automatic lubrication mechanism that keeps the chain well-oiled and operating smoothly and seamlessly, even after hours of use. And you WILL be able to cut for hours, thanks to the 40V MaxLithium battery which delivers more capacity, longer run times, no self-discharge, no slow loss of power, less weight, more power and quicker charging times. Charge the battery within 3 hours and it?s ready when you need it.