Replacement B22 Series Rechargeable Battery Pack, 4000mAh This replacement battery pack fits the B22 form factor and provides a dependable 4000mAh capacity for compatible cordless tools. Designed as a direct replacement for B22 family packs, it restores runtime without requiring tool modification. Key benefits Restores power quickly: Replacement battery restores tool runtime so work continues without interruption. Broad compatibility: Works with tools that accept the B22 battery interface, including SID 22A, SID 4A22, SID 8A22, SIW 22A, SIW 22TA, SIW 22TA 1/2, and SIW 6ATA22. Longer run time: 4000mAh capacity delivers extended operating time compared with lower capacity packs. Reliable rechargeability: Built for frequent charge and discharge cycles to support regular jobsite use. Easy swap: B22 form factor allows simple installation and removal for fast battery changes. What it does and why you need it Function: Serves as a rechargeable replacement battery pack for B22compatible cordless impact drivers, wrenches, and screwdrivers. Problem solved: Replaces worn or underperforming batteries to recover lost runtime and maintain productivity. What makes it stand out: A capacity pack in the common B22 form factor that balances runtime and size for everyday trade use. Specifications and attributes Model family: B22 series including B22, B22/1.6, B22/2.6, B22/3.3, B22/5.2, B22/8.0 Capacity: 4000mAh Function: Rechargeable battery pack for B22compatible cordless tools Compatibility: Fits tools listed above that accept B22 batteries Construction: Built with quality rechargeable cells and engineered to match the B22 physical and electrical interface Practical use scenarios Construction trade: a depleted pack on an impact wrench during a framing job to maintain consistent torque and fastener driving. Maintenance and : Keep a charged spare in a maintenance kit to minimize downtime when replacing worn parts or performing onsite servicing. DIY and renovation: Use for extended screw driving and fastening during weekend renovation projects where longer runtime reduces interruptions. Notes for buyers Confirm your tool accepts the B22 form factor before by checking the current battery pack designation on your tool. This product is specified as a replacement B22 battery pack with 4000mAh capacity for the compatible tool models listed above.