I am one who expects my top-of-the-line blower to run at its full capacity for hours. Why else would one buy a powerful unit at such a price and "warranty". After 6 months using two 6 Ah batteries I noticed some apparent issues where the unit would randomly shutoff and then be difficult to start again. You only have two choices, change the fully charged batter with a different one or keep reinserting it over and over until the unit runs again for a few minutes. I thought, maybe I was stressing the 6 Ah batteries. So, I got a 12 Ah. It was heavy as heck. Experienced users will know Ego does not fully understand that metal can bend, so their strap will consistently fail with a heavy battery. I got the backpack next. Still found problems with it stopping frequently. Ego decided to replace the blower. I've had the replacement for a year or so. Guess what's happening. Yes, the 12 Ah with backpack is failing. I've done some research. It seems Ego's batteries are known to have this problem. It's been known since day 1. They are doing nothing about it. Once your warranty is over, it's no longer their problem. It would be nice if they address the problem. But, like all companies, it's based on profit and not quality. They will not claim responsibility after the warranty. They know and consumers know who is at fault. I've invested a lot now. Even as unprofessional as this is, you can only get worse than Ego. I hope they decide to make improvements. Meanwhile, expect to replace your highly overpriced batteries and equipment every few years or go back to gas and get 20 years of life for 1/4 the price.