Will the De Walt batteries 20V Max lithium ion 1.5 ah and charger i have for my drill set work with this

I bought a 20v Max Li-Ion 3.0 Ah battery for this and got about 32 cuts through some 1 x 6 wood planks before it lost charge. You could probably get away with 2 of these 3.0 Ah batteries if one is on the charger at all times.

I have this saw and need to cut a 6ft piece of Caesarstone. Is there a blade that would work with this saw to cut my stone?

It definately will do a good job. 5" mason blade. I wouldn't do it daily if it's your job but a bathroom or 2 is fine. I've done 5 bathroom jobs and work with wood daily. Use fhis little guy a lot from ripping siding to decking to studs. Still works great. I use a bigger corded worm drive for roofs and tearing into sub floor. Also 4 of the bathroom jobs were 1/2" rock and 1 was 1/4". I did probably 30 bathrooms with my 18v. It was a drag when the nicads would run down. Hope that helps.

How do you put the blade on?

The allen wrench is provided in the handle near the battery on the right hand side. Push in the blade lock button at the top of the blade guard to stop the motion. Loosen the bolt with the allen wrench until the clamp is removed. (The bolt is reverse threaded, so it is clockwise to loosen, counterclockwise to tighten, the opposite of most bolts.) Place the blade between the inner and outer washer guards. Pull back the blade guard to insert the blade into place. Use the allen wrench to tighten the bolt into place (using the blade lock button to stop the blade motion). Make sure the blade is securely in place before using.

Is the blade and cutting line visible from the top when I am cutting the wood.

Yes! ...as long as you're right handed. :)

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Description

⚡ Cut fast, cut smart — own the jobsite with DEWALT power!

COMFORT IN CONTROL - Ergonomic rubber overmolded grip delivers optimal balance and reduces fatigue.
CUT MORE CHARGE LESS - 6-1/2-inch carbide-tipped blade doubles cutting capacity per charge.
POWER MEETS PRECISION - 5150 RPM motor powers through demanding cuts effortlessly.
VERSATILE BEVEL CAPACITY - 0-50° bevel range for aggressive, precise angled cuts across projects.
BUILT TO LAST BUILT TO PERFORM - Magnesium shoe ensures long-term jobsite durability and cut accuracy.

The DEWALT 6-1/2-inch 20V Max Circular Saw (DCS391B) combines a powerful 5150 RPM motor with a lightweight magnesium shoe for unmatched durability and precision. Its ergonomic rubber grip and 0-50° bevel capacity make it perfect for versatile, aggressive cuts. Battery-powered for cordless convenience, this saw’s carbide-tipped blade maximizes cutting efficiency, making it the go-to tool for professionals who demand speed, control, and reliability on every job.

Specifications

Manufacturer	DEWALT
Part number	DCS391B
Item Weight	3.16 Kilograms
Product Dimensions	39.37 x 21.59 x 26.67 cm; 3.16 kg
Batteries	1 Lithium Ion batteries required.
Item model number	DCS391B
Size	6-1/2 inches
Color	multi
Style	Circular Saw Only
Finish	Brushed
Material	Blend
Pattern	Saw
Shape	Rectangular
Power source type	Battery Powered
Voltage	20 Volts
Item Package Quantity	1
Number Of Pieces	1
Head Style	Flat
Number of Handles	2
Handle Material	Rubber
Blade Length	6.5 Inches
Blade Edge	Sharp
Speed	5150 RPM
Measurement System	Metric
Accessory Connection Type	5/8" Arbor
Specification met	(unset)
Special Features	Keyless Blade Change
Included components	20v 6-1/2" circular saw
Batteries Included?	No
Batteries Required?	Yes

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