This makes spraying a lot easier - almost fun. The battery lasted two full containers and still had enough left to flush fresh water. My issue is the strap. The front chest level plastic buckle failed on my first job. The plastic side of the buckle actually broke and let the straps out. I patched it together and completed. Then I ordered a commercial grade strap designed for the Solo. It works well. Without the buckle issue, this would get 5 stars from me.
The light weight is a good point. Spraying ability is good. Battery is good for an hour of spraying, but after 4 years has to be replaced. This is in comparison to some of my Makita 18 volt batteries I have recharged for 10 years.