It's a handy little wrench, with just a few drawbacks.

What I liked:
Quick and easy adjustments
Nice grip

What I didn't like:
Philips screwdriver required to replace batteries
No "hold" button to keep the tool from accidentally powering on

I'd give it 5 stars if at least one of the cons were fixed. I wouldn't need to replace the batteries that much if it didn't accidentally power on, and it wouldn't be such a pain to replace the batteries that often if it wasn't for the screw.

I've been through 3 of these already. At first it seems great, especially on one handed jobs.It has come in very handy with jobs that require two wrenches. It eventually will break. The motor will become too week. Black & Decker is however very quick to send a replacement.If they can make this tool's motor stronger, then it would be a great one to own.It's defiantly not meant to be an every day tool.

This is good for a beginner but it doesn't grab on tight and has many limitations in where it can be used.

The wrench works well-just as advertised. Because of the battery compartment the handle is a bit bulky. It is still workable, and it works well in tight quarters where it is difficult to adjust a mechanical wrench.

I was surprised at some of the negative comments about this wrench. First of all, it seems to me to be as effective as the equivalent manually adjustable "crescent" wrench -- with the emphasis on adjustable. There are some rare times when an adjustable wrench won't do and an exactly size open end wrench from a set of wrenches may be necessary. In those cases, this wrench won't do the trick any more than a manually adjustable crescent wrench will.

But lets talk of the 97.98% of cases where an adjustable open-end wrench is just what is wanted and needed. Here's one that adds something useful -- it adjusts wider and narrower at the touch of a button. Well, a spring-loaded momentary-on rocker switch, actually. Convenient for your thumb -- doesn't matter whether you're right-handed or left-handed -- there's this rocker switch. Press one end of the switch and the wrench width opens up. Press the other end and it closes up. It doesn't take much practice to get the hang of it, and in an instant you can resize the wrench to fit your application.

My first use the other day involved replacing the fill-valve inside my toilet tank. Where I needed a wrench was to loosen the supply tube's hex nut -- you know the one, it holds the bottom end of the water supply tube to the shut-off valve that comes out of the wall below the tank. I also needed it to tighten the same nut when I installed the new tube. It did the job admirably. Yes, my old manually adjustable crescent wrench would have worked, but that takes a bit more effort to get the wrench jaws to the right diameter. With this battery-operated wrench, the adjustment was performed in an instant with the push of the rocker switch with my thumb, and without trial and error.

I'll be using this wrench a lot in the future, no doubt about it.

Yes, the grip is a bit bulkier because of the rubber coated battery compartment that forms the grip on the handle, and the handle is a bit wider than a manually adjustable wrench. But it was actually more comfortable for me, perhaps because I have fairly large hands. (I suspect that people with small hands might find a manually adjustable wrench with a slimmer handle better for them.)

Anyway, the other thing is, this is a fun wrench to use, too, a nice toy for people who do handy things. Well worth the $24 and change, I find.