The Ryobi PSBIW25K1 pairs the compact 18V ONE+ HP brushless 1/2 in. impact wrench with an 18V 2.0 Ah HIGH PERFORMANCE battery and an 18V charger, providing a lightweight, ready-to-use package for automotive service and general fastening tasks. At just 3.8 lbs the wrench is 35% lighter and 26% more compact than the high-torque PBLIW01B, making it easier to maneuver in tight wheel wells or cramped engine compartments. The 275 ft-lb breakaway torque and four operating modes — three speeds plus auto-stop — handle passenger vehicle lug nuts and common construction fasteners without the added weight of a full-size gun. The 2.0 Ah HIGH PERFORMANCE battery keeps the overall kit weight low while still providing reliable sustained output for the compact wrench's torque demands.
What does the PSBIW25K1 kit include?
The PSBIW25K1 includes the PSBIW25B compact impact wrench, one 18V 2.0 Ah HIGH PERFORMANCE battery, and an 18V charger. No sockets are included; you will need standard 1/2 in. drive impact sockets separately.
Why does the PSBIW25K1 include a 2.0 Ah battery instead of 4.0 Ah?
The 2.0 Ah HIGH PERFORMANCE battery is paired with the compact wrench to keep the overall kit weight and size low, which is the primary advantage of this tool over the full-size impact wrench. The 2.0 Ah pack is sufficient for the wrench's torque demands during typical automotive service sessions. If you need more runtime, any Ryobi 18V ONE+ battery including 4.0 Ah and 6.0 Ah packs will also fit.
Is the PSBIW25K1 strong enough for lug nuts?
Yes, for standard passenger vehicles and most light trucks. The 275 ft-lb breakaway torque comfortably exceeds the factory torque specs of most passenger vehicle lug nuts (typically 80 to 120 ft-lbs), giving enough headroom to remove moderately overtightened fasteners as well.
How does the auto-stop mode work on the PSBIW25K1?
Auto-stop mode monitors resistance as the fastener seats and cuts power to the motor when it detects the fastener has reached a threshold — helping prevent overtightening. It is particularly useful when reinstalling lug nuts to avoid damaging wheel studs or distorting brake rotors.
Can I use the PSBIW25K1 battery in my other Ryobi 18V tools?
Yes. The included 2.0 Ah HIGH PERFORMANCE battery is compatible with the entire Ryobi 18V ONE+ platform. You can swap it into drills, circular saws, reciprocating saws, and any other ONE+ tool. Conversely, any ONE+ 18V battery you already own will work in the PSBIW25B wrench.
# Ryobi ONE+ HP 18V Brushless Compact 4-Mode 1/2 in. Impact Wrench Kit (2.0 Ah) **Model:** `PSBIW25K1` **Brand:** Ryobi **Category:** Impact Wrench > The Ryobi PSBIW25K1 pairs the compact 18V ONE+ HP brushless 1/2 in. impact wrench with an 18V 2.0 Ah HIGH PERFORMANCE battery and an 18V charger, providing a lightweight, ready-to-use package for automotive service and general fastening tasks. At just 3.8 lbs the wrench is 35% lighter and 26% more compact than the high-torque PBLIW01B, making it easier to maneuver in tight wheel wells or cramped engine compartments. The 275 ft-lb breakaway torque and four operating modes — three speeds plus auto-stop — handle passenger vehicle lug nuts and common construction fasteners without the added weight of a full-size gun. The 2.0 Ah HIGH PERFORMANCE battery keeps the overall kit weight low while still providing reliable sustained output for the compact wrench's torque demands. ## Specifications | Attribute | Value | |---|---| | Product Type | Impact Wrench | | Voltage (V) | 18 | | Platform | ONE+ HP | | Cordless / Corded | Cordless | | Motor Type | Brushless | | Drive Size In | 0.5 | | Max Torque (ft-lbs) | 275 | | Max Torque (in-lbs) | 3,300 | | Speed Settings | 4 | | Tool Only | No | | Batteries Included | 1 | | Battery Ah | 2 | | Battery Included | Yes | | Charger Included | Yes | | Weight (lbs) | 3.8 | | Warranty | 3-year limited | ## What's Included - (1) RYOBI ONE+ HP 18V Brushless Compact 4-Mode 1/2 in. Impact Wrench (PSBIW25B) - (1) 18V 2.0 Ah HIGH PERFORMANCE Battery - (1) 18V Charger Source: https://www.jaspecs.com/ryobi/impact-wrench/psbiw25k1-ryobi-18v-one-hp-compact-brushless-4-mode-1-2-in-impact-wrench-kit/