Actual rating 4.5/5 stars.A lot of other reviewers have listed pros and cons, so I'll do the same, with what's important to me in this sort of device. As you can see in the picture, I bought it primarily to power an Echo Dot, but I do also use it to charge my phone/etc. in a pinch. It can easily charge my phone and power the Dot at the same time, too!Pros!- High capacity - puts out enough power that my Dot runs wall-free all day. I recharge it at night.- Speaking of the Dot - Dots can't run when they don't get enough power, i.e. with weaker cables or slower power flow. The fact that it's running while plugged into this thing means it can compete with wall charging power, AND the cable it came with is actually made for fast charging.- Not actually that heavy - more portable than I was expecting.- 12 month warranty, not too shabby!- Easy visualization of how much power is left, as indicated by the blue lights.- A built in flashlight! Pretty helpful, honestly.- LOOK AT THAT PRICE!Cons:- VERY SLOW RECHARGE, as others have pointed out. It takes all night to recharge. A BIG minus. Half a star's worth, in fact.- The blue lights can't be turned off, and it flashes when charging. I have to cover it with a shirt so it doesn't keep me up at night.- Does not come with a wall adapter to charge itself... but we all have these lying around, right?- Cannot run my Dot while it itself is charging - the power bank cuts off power to the Dot so it can recharge.All in all, I'm really happy with it, and only have a few minor complaints, all of which are outweighed by its price, capacity, and power output. I haven't had it break or mess up or do anything weird on me, like I've read happening to other reviewers. I know there's higher quality options, if you're in the market to spend a lot more, but this really does get the job done for a fraction of the price. I really recommend it, depending on your needs.