Worked great (for a little while...)
This worked fine for several months, and then would no longer take a charge. I'm assuming this one was defective. I didn't get around to worrying about it, because I didn't need the PA right away. It's now been about 14 months since I bought it, and was faced with buying a new one for an upcoming gig. That's when I discovered it has Sweetwater's 2 year warranty!
So the battery gets zero stars, but Sweetwater's service gets 5 stars, so it averaged out to 2.5 stars. With luck, the replacement will last a lot longer.