Cordless CIW-2100-R Impact
- Impact
- 9.7 pounds
- 21 volts
A heavier 21 volt cordless impact tool aimed at high torque fastening rather than light driving, with weight that reflects its power class.
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How it ranks among the 284 impacts we track
4.0★ across 201 Amazon ratings, Bayesian-smoothed toward the category average.
201 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Modest tracked demand last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 284 impacts we track - how the scorecard works · full impacts data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
The Cordless CIW-2100-R runs on a 21 volt battery and weighs 9.7 pounds, a weight well above typical handheld impact drivers and closer to a heavy duty cordless impact wrench class built for high torque fastening.
At 21 volts and nearly 10 pounds, this tool sits at the heavier end of cordless impact tools, likely built for automotive or structural bolt work rather than light screw driving. The title names it simply Cordless, so the brand identity is unclear from this data, but the voltage and weight together point toward serious torque capability.
- 21 volt cordless power
- 9.7 pound tool weight
- Impact wrench class build
Who it's for
Suits users tackling lug nuts, heavy bolts or structural fastening who want cordless freedom without sacrificing torque. Not a fit for anyone wanting a light, one handed driver for trim screws or furniture assembly, where the weight here would be excessive.
Strengths and trade-offs
Drawn from this product's published specifications.
- 21 volt battery suits higher torque demands
- Cordless operation for mobility
- 9.7 pounds is heavy for extended one handed use
- Brand identity unclear from the listing title
Performance notes
The 21 volt battery platform combined with 9.7 pounds of tool weight points to a design built for torque over speed or portability, typical of impact wrenches used on lug nuts and structural bolts. That weight will tire out a user faster in prolonged one handed use compared to lighter impact drivers.
Specifications
| Brand | Cordless |
|---|---|
| Model | CIW-2100-R |
| Item Weight | 9.7 pounds |
| Voltage | 21 volts |
Other Cordless impacts
How it compares
This product against the closest alternatives we track in impacts.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Cordless CIW-2100-R ImpactThis product | 4.0 / 5 | 201 | 3.3 / 5 |
| DEWALT DCF845B ImpactDeWALT | 4.7 / 5 | 12,700 | 4.5 / 5 |
| Milwaukee 2457-20 ImpactMILWAUKEE | 4.6 / 5 | 8,078 | 4.5 / 5 |
| GEARWRENCH 81270 ImpactGEARWRENCH | 4.7 / 5 | 4,983 | 4.4 / 5 |
| AOBEN AB7331T ImpactAOBEN | 4.4 / 5 | 10,707 | 4.4 / 5 |
Similar impacts from other brands
Questions about the Cordless CIW-2100-R
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
How heavy is the Cordless CIW-2100-R?
It weighs 9.7 pounds, heavier than a typical handheld impact driver.
What voltage battery does it use?
It runs on a 21 volt battery.
Is this suited to light screw driving?
No, its weight and voltage point to a heavier torque tool better suited to lug nuts and structural bolts.