I had no idea how much I needed this until I saw what came out of it after the first use...and the "pool guy" was literally JUST there before I put it in the water!
You can see how much dog hair and sand was in my pool. Quite odd since I am 30 miles from a beach and our dog doesn't use the pool!
Out of the box we didn't charge it, but it had 4 "bars" and it worked for 2 hours ( per the advertisement, running time is 130 minutes on average) so I feel like that was a good chunk of time.
It's very easy to use, operate and dismantle for cleaning as well as putting it back together.
Note: our pool has rounded bottom and I didn't realize that this was not ideal for this cleaner.
That said, it still works, perhaps juts not as efficiently.
Another Note: No matter where I place it or in which direction, it always ends up in the same general place in the pool.
It does kick up quite a bit of dust, again, this is me realizing how badly we needed this little guy! That said, I would not recommend running it unless your skimmer is on.
Overall, it does a good job. Even though it's simple to use, it is a hassle sometimes, but it is worth it.