Stihl MSA 300

Stihl MSA 300 with 20 inch bar and chain used less than 10hrs-Worst Chainsaw I ever owned and I own several Stihl petrol chainsaws. Purchased with 2 AP 500 batteries from an authorised local dealer. Spoke to the dealer to speak to the Stihl rep for our area that the saw is promoted falsely. no joy. With 2 batteries (AP 500) useable working time is a little over 1 hr. It takes several hours to recharge the batteries. Stihl advertises that you can work all day with 2 batteries. How can Stihl promote this saw as Professional? False advertising. Avoid.