24" twostage has a cheap cotter pin where it needs a roll pin in the impeller shaft.

21" singlestage w steel auger, bent auger 1st use out of the box. 21" Auger shaft is a poor design. I hit a block of ice, and it bent the auger shaft. Vibrates horribly. The auger shaft should not be the weak point. The belt should popoff, or there should be pins on the auger shaft. Used for about 20minutes. $100 in parts, but a fairly simple repair.

I had a similar experience with the 24" twostage snow blower as well. There is a cheap cotter pin holding the impeller to the impeller shaft. Most other major snow blower manufactures use a roll pin here. This one made it one season, and did OK.
The motor failure is a $300 part and requires complete disassembly of the machine.

Batteries and charger have not been an issue. Keep batteries stored indoors, and let the batteries sit notcharging when not in use.

I now have two nonworking EGO snow blowers. They are under warranty. I purchased the blowers at a store less than a mile from my house. it is 70miles each way to the warranty center. I can drive the small unit in my car, but the 24" twostage will not fit in my car, would have to pay a courier to deliver it.
Design flaws left me stranded and will have to pay for snow removal this year, 6090 days out on warranty repair, if I can even get the units there.

00:00 Intro
2:40 Dog bone got stuck between impeller and chute, causing motor failure SNT2400.
3:43 Free Spinning Motor SNT2400
5:50 Motor Grinding Gears SNT2400
8:02 Battery tips
12:00 Auger Shaft Vibration 2110
13:24 More Shaft Vibration 2110
15:00 Chunk of ice that bent shaft 2110.