Cordless GJ25901-1 Impact
- Impact
- Battery
- 9 pounds
- 21 volts
21 volts and 3300 RPM make this a fastening-focused impact tool, but the listed 9 pound weight is worth confirming against the photos before buying for one-handed use.
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How it ranks among the 284 impacts we track
4.5★ across 97 Amazon ratings, Bayesian-smoothed toward the category average.
97 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
200+ bought on Amazon 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
Voltage and RPM are the two numbers that define this listing: 21 volts and 3300 RPM, on a cordless impact tool that weighs a listed 9 pounds, brand shown only as Cordless.
21 volt battery platforms are common across mid-range cordless impact tools, and 3300 RPM lines up with drivers built for repeated fastening rather than raw torque wrenching. What stands out is the 9 pound item weight, heavier than the 2 to 4 pounds typical of handheld impact drivers, so it is worth checking whether that number covers the tool alone, the tool plus battery, or a shipping weight.
- 21 volt battery power
- 3300 RPM rated speed
- 9 pound item weight
- Category: Tools > Impacts
Who it's for
Works for buyers who want a 21 volt cordless impact tool and do not mind extra heft in the hand. Less workable for anyone who needs a light, one-handed tool for overhead or cramped spaces, given the 9 pound figure.
Strengths and trade-offs
Drawn from this product's published specifications.
- 21 volt battery platform
- 3300 RPM rated speed for repeated fastening
- 9 pound listed weight is heavy for a handheld impact tool
- No torque figure published
Performance notes
3300 RPM on a 21 volt battery favors speed of fastening over maximum torque, a common setup for impact drivers built for repetitive work. At a listed 9 pounds, it runs heavier than typical handheld units in this class, which will show up in grip fatigue over longer sessions.
Specifications
| Brand | Cordless |
|---|---|
| Model | GJ25901-1 |
| Power Source | Battery |
| Item Weight | 9 pounds |
| Voltage | 21 volts |
| Speed | 3300 rpm |
Other Cordless impacts
How it compares
This product against the closest alternatives we track in impacts.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Cordless GJ25901-1 ImpactThis product | 4.5 / 5 | 97 | 4.0 / 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 GJ25901-1
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What voltage battery does the GJ25901-1 use?
It runs on a 21 volt battery.
How fast is the GJ25901-1 impact tool?
It is rated at 3300 RPM.
How much does the GJ25901-1 weigh?
The listing gives an item weight of 9 pounds.