I bought this expecting it would work with the same battery I use with my Milwaulkee Lithium-Ion Hammer drill,
br /it does! The saw is light and powerful with the Lithium battery, the charge lasts a long time for a cordless.
br /This saw comes with (1) ONE 6 1/2 CARBIDE blade, the other review here makes one wonder. No case, no battery. Blade is on the LEFT side. Also, it's made in the USA!

This is my first purchase of a cordless circular saw. Because of that I can't say how this one matches up to other brands. The pros: medium sized therefore lighter weight than corded saws, lots of power - no problem cutting throught 2x4's or 1 inch oak, cordless - no connecting extension cords, it has a push button blade lock for easy blade replacement, safety trigger release - for those with kids, batteries seem to last about as long as my cordless Hatchet Sawzall (probably could crosscut about 50 -75 2x4's, and it will run on Milwaukee's 18 volt Regular or Lithium Ion batteries. The cons: blades (6.5 inch) can be take a little time to locate at some of the commericial big box do-it-yourself places (I know the big orange stores sell them) and it has a left sided blade - not a really big deal since it works very well right handed , it just takes a couple of practice cuts to know where the blade is cutting like all saws.

Based on Lumi's review, we bought the circular saw and Sawzall thinking they would work with the lithium battery that came with my husband's cordless drill.
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br /They are not compatible, and now we have to pay to have these returned.

You can get a good amount of running time out a batt. But what I like as a right hander is I can see where I'm cutting, the blade is on the left side, unlike 90% of all cicular saws.

I've used this saw for 4 years now and it is my favorite of all the other Circular Saws, (corded or battery powered) bar none. I currently own this and a Milwaukee tilt lock which is average, I'd rather have a corded version of this saw any day.
br /The cut guide marks on the Aluminum foot extend so far in front of the blade I don't have to bother using a square to extend my pencil mark even when cutting a 2x6. The balance, weight and position of the handle are what set this apart from all other circular saws and I've used alot. even with its 6.5" blade it will bevel all the way and still cut a 2x. Even though the Nicad batteries are outdated now this saw will make a ton of cuts before running out of power.
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br /Cons. It needs a kick stand. The compromise to it's ergonomic design and balance is top heaviness when the cut depth is set shallow. I usually prop it up on a 2x4. Wish it had a rafter hook.

Final got out to get some new 6.5" blades. Works very good & not too heavy.