1. Introduction
Thank you for choosing the DEWALT DCN890P2 20V MAX XR Cordless Concrete Nailer Kit. This manual provides essential information for the safe operation, maintenance, and troubleshooting of your new tool. Please read this manual thoroughly before use and keep it for future reference.
The DEWALT DCN890P2 is designed for concrete and steel fastening applications, offering a powerful and consistent alternative to gas-powered tools by utilizing the DEWALT 20V MAX* battery platform. Key features include variable power settings for depth adjustment, a field-serviceable driver blade to minimize downtime, and tool-free jam clearing.

Image 1.1: The DEWALT DCN890P2 20V MAX XR Cordless Concrete Nailer with a 20V MAX battery installed.
2. General Safety Information
Always observe basic safety precautions to reduce the risk of fire, electric shock, and personal injury when operating power tools. Keep this instruction manual for future reference.
2.1. Work Area Safety
- Keep the work area clean and well-lit. Cluttered or dark areas invite accidents.
- Do not operate power tools in explosive atmospheres, such as in the presence of flammable liquids, gases, or dust. Power tools create sparks which may ignite the dust or fumes.
- Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control.
2.2. Electrical Safety
- Power tool plugs must match the outlet. Never modify the plug in any way.
- Do not expose power tools to rain or wet conditions. Water entering a power tool will increase the risk of electric shock.
- Do not abuse the cord. Never use the cord for carrying, pulling, or unplugging the power tool. Keep cord away from heat, oil, sharp edges, or moving parts.
2.3. Personal Safety
- Always wear eye protection. Use safety glasses or goggles.
- Wear appropriate personal protective equipment (PPE) such as hearing protection, gloves, and a dust mask when necessary.
- Stay alert, watch what you are doing, and use common sense when operating a power tool.
- Avoid accidental starting. Ensure the switch is in the off-position before connecting to battery pack, picking up or carrying the tool.
- Do not overreach. Keep proper footing and balance at all times.
3. Package Contents
Your DEWALT DCN890P2 Kit includes the following items:
- (1) DCN890 20V MAX* Cordless Concrete Nailer
- (2) DCB205 5.0Ah Batteries
- (1) DCB115 Charger
- (1) DCN8904 Standard/Drywall Contact Trip
- (1) Kitbox
- (1) Instruction Manual (this document)

Image 3.1: The DEWALT DCN890P2 kit, showing the nailer, two batteries, charger, and contact trip organized within the kitbox.
4. Setup
4.1. Charging the Battery
- Connect the DCB115 charger to a standard power outlet.
- Slide the DCB205 5.0Ah battery pack into the charger. Ensure it is fully seated.
- The charger's indicator light will show the charging status. Refer to the charger's manual for specific light patterns.
- Once fully charged, remove the battery from the charger.
4.2. Installing the Battery
- Ensure the nailer's trigger is locked or the tool is off.
- Align the charged battery pack with the battery port on the nailer.
- Slide the battery into the port until it clicks securely into place.
- To remove, press the battery release button and slide the battery out.

Image 4.1: Side view of the DEWALT DCN890P2 nailer, illustrating the battery compartment and general tool design.
4.3. Loading Fasteners
- Ensure the battery is removed and the tool is off before loading fasteners.
- Open the magazine latch and pull the pusher back until it locks.
- Insert a strip of DEWALT CORDLESS CONCRETE NAILER FASTENERS (pins) into the magazine. Ensure the fasteners are oriented correctly.
- Release the pusher, allowing it to push the fasteners forward.
- Close the magazine latch securely.
4.4. Attaching the Contact Trip
The DCN8904 Standard/Drywall Contact Trip is included for application versatility. To attach or change the contact trip, refer to the specific instructions provided with the contact trip accessory. Ensure it is securely fastened before operation.
5. Operating Instructions
5.1. Power Settings and Depth Adjustment
The nailer features variable power settings to adjust pin depth and accommodate different substrates. Locate the power adjustment dial or switch on the tool. Start with a lower setting and increase as needed to achieve the desired fastener depth. Test on a scrap piece of material before fastening to your final workpiece.
5.2. Firing the Nailer
- Ensure all safety precautions are followed, and appropriate PPE is worn.
- Place the contact trip firmly against the workpiece where the fastener is to be driven.
- Press the tool firmly against the surface to engage the contact trip.
- Pull the trigger to drive the fastener.
- Release the trigger and lift the tool from the workpiece.
- The dual LED worklights will illuminate the work surface and provide onboard diagnostics during operation.

Image 5.1: A worker demonstrating the use of the DEWALT DCN890P2 nailer to fasten material to a metal stud.

Image 5.2: A worker demonstrating the use of the DEWALT DCN890P2 nailer to fasten material to a concrete wall.
6. Maintenance
Regular maintenance ensures optimal performance and extends the life of your tool. Always disconnect the battery pack before performing any maintenance.
6.1. General Cleaning
- Keep the tool's ventilation openings clear and free of debris.
- Use a clean, dry cloth to wipe down the exterior of the tool. Do not use solvents or harsh chemicals.
- Periodically inspect the magazine for any obstructions or debris that could interfere with fastener feeding.
6.2. Field-Serviceable Driver Blade
The DCN890P2 features a field-serviceable driver blade, designed to reduce tool downtime. If the driver blade requires service or replacement, refer to the detailed instructions in the separate service manual or consult an authorized DEWALT service center. Attempting repairs without proper knowledge may void your warranty or cause further damage.

Image 6.1: Close-up view of the nailer's nose, showing the contact trip and fastener exit point, which houses the driver blade.
7. Troubleshooting
This section addresses common issues you might encounter with your DEWALT DCN890P2 nailer. For problems not listed here, contact DEWALT customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Nailer does not fire. | Battery not charged or improperly installed. Fasteners jammed or magazine empty. Contact trip not fully depressed. | Ensure battery is charged and properly seated. Check magazine for fasteners and clear any jams (refer to tool-free jam clearing instructions). Press the contact trip firmly against the workpiece. |
| Fasteners not driven to full depth. | Power setting too low. Incorrect fastener for material. Worn driver blade. | Increase the power setting. Ensure fasteners are appropriate for the substrate. Inspect driver blade; service if necessary. |
| Tool jams frequently. | Incorrect fasteners. Debris in magazine or nosepiece. Worn driver blade. | Use only DEWALT CORDLESS CONCRETE NAILER FASTENERS. Clear any debris from the magazine and nosepiece. Inspect driver blade; service if necessary. |
7.1. Tool-Free Jam Clearing
The DCN890P2 is equipped with a tool-free jam clearing mechanism. If a fastener jam occurs, ensure the battery is removed. Follow the instructions on the tool or in the full manual to open the nosepiece and clear the jammed fastener. Always wear gloves and eye protection when clearing jams.
8. Specifications
| Feature | Specification |
|---|---|
| Brand | DEWALT |
| Model Number | DCN890P2 |
| Power Source | Battery Powered |
| Voltage | 20 Volts |
| Battery Capacity | 5 Amp Hours (DCB205) |
| Fastener Length | 1/2 - 2-1/4 inches |
| Fastener Type | DEWALT CORDLESS CONCRETE NAILER FASTENERS (Pins) Only |
| Magazine Capacity | 33 fasteners |
| Shots per Charge | Up to 600 shots (with 5.0Ah battery) |
| Item Weight | 8.85 Kilograms |
| Material Type | Metal |
| Additional Features | Variable Power Settings, Tool-Free Jam Clearing, Dual LED Worklights, Brushless Motor, Field-Serviceable Driver Blade |
9. Warranty Information
DEWALT offers a limited warranty on its products. For detailed warranty terms and conditions, including coverage period and claim procedures, please refer to the warranty card included with your product or visit the official DEWALT website. Keep your proof of purchase for warranty claims.
10. Customer Support
For technical assistance, service, or to order replacement parts, please contact DEWALT customer support. You can find contact information on the official DEWALT website or in the documentation provided with your product.
Website: www.dewalt.com
Service Centers: Locate an authorized service center near you via the DEWALT website.