SKIL 20V 6-1/2 Inch Cordless Circular Saw Includes 2.0Ah PWR: the pack, the platform and what they actually hold
A 20 V tool on a 2 Ah pack, measured against the 58 cordless saws in this corpus — including the 40 Wh those two figures multiply out to, which the listing does not state.
Every figure below is read from the manufacturer’s own listing. We do not test tools and nothing here has been run down a battery, timed under load or weighed. Where the listing is silent, this page prints not stated rather than a plausible default, and the figure no manufacturer publishes — the energy the pack actually holds — is arithmetic on two figures that are published, shown with its working.
At a glance
| Specification | Stated |
|---|---|
| Platform voltage | 20 V |
| Pack capacity | 2 Ah |
| Energy in the pack (derived) | 40 Wh |
| Maximum speed | 4,500 rpm |
| Weight | 3.5 kg (8 lb) |
| Energy class | Under 50 Wh |
| Power source | battery |
| Price band | $50–120 |
| Brand | Skil |
What the pack actually holds
Two numbers decide how long a cordless tool runs, and listings print them separately: the platform voltage and the pack’s amp-hours. Multiply them and this one carries 40 Wh — 20 V times 2 Ah. That product appears on no listing anywhere, and it is the figure that matters, because amp-hours on its own is only half the sum.
Which is why amp-hours mislead when they are compared across platforms. A 20 V 4.0 Ah pack holds 80 Wh; an 18 V 5.0 Ah pack holds 90. The one with the smaller headline number lasts longer, and a buyer comparing “5.0 Ah” against “4.0 Ah” has been given the wrong figure to compare. Further apart it gets worse: a 60 V 2.5 Ah outdoor pack holds 150 Wh against that 20 V 4.0 Ah pack’s 80, and is sold on the lower number.
This is energy, not minutes. Turning watt-hours into runtime needs the tool’s draw under load, and not one listing in this corpus states one — no amperage, no wattage, nothing. So this site does not estimate it. 40 Wh is what the pack holds; how fast a given tool empties it depends on what you are driving into what, and the only honest comparison is between two packs rather than between a pack and a job.
What the voltage commits you to
At 20 V this sits in the general-purpose class, which is where most of a tool collection ends up. The number is not a quality ranking — a 12 V driver is not a worse tool than a 20 V one, it is a tool for working inside a cabinet — but it is a commitment, because the pack fits this brand’s platform and nothing else.
That is the part worth thinking about before the tool. A pack bought for this one powers every other tool on the same brand’s 20 V line, and none on anybody else’s. Over five years the batteries and chargers on a mid-size collection frequently cost more than any single tool in it, so the platform decision outlives the purchase that prompted it. The battery platforms page works that arithmetic through properly.
How it compares with its own class
Against the 58 cordless saws in this corpus, rather than against a generic alternative:
| Measure | This one | Class median | Where it sits |
|---|---|---|---|
| Energy in the pack (derived) | 40 Wh | 80 Wh | below the class median of 80 Wh |
| Platform voltage | 20 V | 20 V | the same as the class median |
| Pack capacity | 2 Ah | 4 Ah | below the class median of 4 Ah |
| Maximum speed | 4,500 rpm | 4,800 rpm | below the class median of 4800 rpm |
| Weight | 3.5 kg (8 lb) | 3.2 kg (7 lb) | above the class median of 3.2 kg |
A tool on the class median is not a worse buy than one above it. A bigger pack is heavier, costs more and takes longer to charge, and on a tool used for twenty minutes at a time none of that is repaid. The figure worth weighing is whether the energy covers the longest job you actually do without a swap, which is a question about your work rather than about the median.
Where it suits
- A general collection: the 20 V class is where most tools live, so a pack bought here has the most other tools to fit.
- Short, frequent jobs. At 40 Wh this is a pack to keep in a drawer rather than one to work a day on.
- Driving rather than drilling: 4,500 rpm is a high no-load speed and it suits fasteners more than large bits.
Where it does not
- A day on site. A pack this size is one or two short jobs, so plan on a second pack rather than on a long charge.
- Anyone invested in another brand. The pack fits this platform only, and a second platform means a second set of chargers and spares.
What the listing claims
These are the manufacturer’s statements, not findings. Nothing on this page has been measured by anyone here, and a specification stated on a listing is a claim until the unit is in front of you.
It states platform voltage, pack capacity, energy in the pack, maximum speed, weight, energy class.
The gaps matter as much as the figures. A listing that states amp-hours and no voltage is not describing a small pack, it is describing itself incompletely — and without both halves the energy cannot be worked out at all, which is the one figure that makes two packs comparable.
What no listing on this site tells you
Three things decide whether a cordless saw earns its place, and none is a specification any manufacturer publishes. The first is what it draws under load, and on a saw that is almost entirely the material. The same pack that crosscuts a day of softwood will not get through an afternoon of wet treated timber, and depth of cut matters more than either — a blade buried to its full depth draws far more than one taking a shallow pass.
The second is what you already own. A tool’s real price is the tool plus whatever it forces you to buy alongside it, and on a platform you already have that second number is zero. Bought bare into an existing 20 V line this is one price; bought as a kit into a new one it is the tool, two packs and a charger — and the kit looks like better value only because you had nothing.
The third is charge time, which almost no listing in this corpus states and which decides whether one pack is enough. A large pack on a slow charger is worse than two small ones. Where a manufacturer does publish a charge time it is usually for the smallest pack in the range, which is not the pack you will be waiting on.
Before you decide
Compare the energy, not the amp-hours
This one works out at 40 Wh. Amp-hours alone is comparable only within one voltage, and across platforms it inverts — the pack with the bigger headline number is regularly the smaller battery.
Decide the platform before the tool
At 20 V the pack fits this brand’s line and nothing else, which is a longer commitment than the tool: the batteries outlast it and the chargers outlast them. This is the class where most collections accumulate, so the platform chosen here tends to decide the next several purchases too.
Treat marketing language as a claim
Where a phrase on the listing matters to your decision, look for the number behind it: a stated amp-hour figure rather than a sentence about all-day power, a stated speed rather than a promise of torque. Where this site could not find that number, it says not stated.
If the platform is one you want to be on and the pack covers your longest job, the current price and availability are on Amazon — this site deliberately does not quote either, because both are stale within days of being read.
Check current price and availability
Compare it against the rest of its class
The finder below is filtered to cordless saws. Every result shows its platform and pack, measured against the median for its own class.
58 tools match
Makita XSR01Z 36V (18V X2) LXT® Brushless Rear Handle 7-1/4" Circular Saw, Tool Only
Weight
5.49kg
Saws · 3-6 kg · 25 tools
Weight is +48% against the class median of 3.72.
Makita XSH04ZB 18V LXT® Lithium-Ion Sub-Compact Brushless Cordless 6-1/2” Circular Saw, Tool Only
- Max torque
- not stated
- No-load RPM
- 5000
- Pack
- not stated
Weight
1.81kg
Saws · 1.5-3 kg · 15 tools
Weight is -15% against the class median of 2.13.
DEWALT FLEXVOLT 60V MAX* Circular Saw for Framing, 7-1/4-Inch, Tool Only (DCS577B)
Weight
4.94kg
Saws · 3-6 kg · 25 tools
Weight is +33% against the class median of 3.72.
DEWALT 20V MAX 6-1/2-Inch Circular Saw Kit, with 5.0-Ah Battery and Charger (DCS391P1)
Weight
4.08kg
Saws · 3-6 kg · 25 tools
Weight is +10% against the class median of 3.72.
DEWALT FLEXVOLT ADVANTAGE 20V MAX* Circular Saw, 7-1/4-Inch, Cordless, Tool Only (DCS573B)
- Max torque
- not stated
- No-load RPM
- 5500
- Pack
- not stated
Weight
3.72kg
Saws · 3-6 kg · 25 tools
Weight is 0% against the class median of 3.72.
SKIL 20V 6-1/2 Inch Cordless Circular Saw Includes 2.0Ah PWR CORE 20 Lithium Battery and Charger – CR540602
Weight
3.54kg
Saws · 3-6 kg · 25 tools
Weight is -5% against the class median of 3.72.
DEWALT 20V MAX Circular Saw Cordless with Brake, 7-1/4 Inch, Tool Only (DCS570B)
- Max torque
- not stated
- No-load RPM
- 5500
- Pack
- not stated
Weight
3.40kg
Saws · 3-6 kg · 25 tools
Weight is -9% against the class median of 3.72.
Milwaukee M18 BRUSHLESS 7-1/4" CIRCULAR SAW – BARE
- Max torque
- not stated
- No-load RPM
- 5000
- Pack
- not stated
Weight
3.27kg
Saws · 3-6 kg · 25 tools
Weight is -12% against the class median of 3.72.
GALAX PRO DC20V 4-1/2" Cordless Mini Circular Saw with 2.0Ah battery | Laser Guide, Rip Guide, 2 Pcs Blades(24T+ 60T), 3400RPM, Max Cutting Depth 1-11/16"(90°), 1-1/8"(45°)
Weight
2.86kg
Saws · 1.5-3 kg · 15 tools
Weight is +34% against the class median of 2.13.
DEWALT 20V MAX* 6-1/2 in. Brushless Cordless Circular Saw, Tool Only (DCS565B)
- Max torque
- not stated
- No-load RPM
- 4950
- Pack
- not stated
Weight
2.86kg
Saws · 1.5-3 kg · 15 tools
Weight is +34% against the class median of 2.13.
DEWALT 20V MAX 7-Tool Combo Kit, Includes Cordless Drill, Impact Driver, Reciprocating Saw, Circular Saw, Oscillating Tool, Random Orbital Sander, Jigsaw, 5Ah Battery and Charger (DCK751P1)
- Max torque
- 169.4772435Nm
- No-load RPM
- not stated
- Pack
- 5Ah
Weight
13.52kg
Too few tools in this class to publish a baseline.
Milwaukee M18 FUEL 7-1/4 Inch Circular Saw (Bare Tool)
- Max torque
- not stated
- No-load RPM
- 6000
- Pack
- not stated
Weight
4.99kg
Saws · 3-6 kg · 25 tools
Weight is +34% against the class median of 3.72.
Related
- Saws — the full class, with baselines for every specification.
- Battery platforms — what a platform costs over five years.
- Voltage and amp-hours explained — what each number governs.
- How we compile these figures.