1. Introduction
The PEAK PKC0BO 400-Watt Tailgate Power Inverter converts your vehicle's 12-volt DC power into standard 110/120-volt AC household power. This unit is designed to provide convenient power for various electronic devices, making it ideal for tailgating, camping, or mobile office environments. It features three AC outlets and two USB power outlets, offering versatile charging and power options.
The inverter can be connected either through your vehicle's accessory outlet or directly to the car battery using the included cables.
2. Important Safety Instructions
Please read and understand all safety instructions before operating this power inverter. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Ventilation: Ensure adequate ventilation around the inverter. Do not cover the ventilation openings.
- Moisture: Do not expose the inverter to rain, moisture, or wet conditions.
- Flammable Materials: Do not operate the inverter near flammable materials, fumes, or gases.
- Children: Keep the inverter out of reach of children.
- Overload Protection: Do not exceed the inverter's rated power output of 400 watts. Overloading can cause damage to the inverter and connected devices.
- Vehicle Battery: Always connect the inverter to a 12-volt DC power source. Ensure your vehicle's engine is running when using the inverter for extended periods to prevent draining the battery.
- Built-in Safety Features: This inverter includes low voltage shut down and alarm, overload and heat shutdown protection, and short circuit protection with a replaceable fuse. These features are designed to protect the inverter and your vehicle's electrical system.
3. Package Contents
Verify that all items are present in the package:
- PEAK PKC0BO 400-Watt Tailgate Power Inverter Unit
- DC Power Adapter (for vehicle accessory outlet)
- Battery Clamp Cables (for direct battery connection)
4. Product Features and Components
Familiarize yourself with the key components of your inverter:

An image of the Peak PKC0BO 400-Watt Tailgate Power Inverter, highlighting its three AC outlets, two USB ports, and the main power switch. The unit is designed for easy access and operation.
- Power Switch: Controls the ON/OFF state of the inverter.
- AC Outlets (x3): Standard 3-prong 110/120V AC outlets for household devices.
- USB Power Outlets (x2): For charging USB-powered devices.
- DC Input Port: For connecting the DC power adapter or battery clamp cables.
- Indicator Lights: (Refer to unit for specific light functions, typically for power, fault, or low battery.)
5. Setup and Connection
Choose the appropriate connection method for your needs:
5.1 Connecting to Vehicle Accessory Outlet (Cigarette Lighter)
- Ensure the inverter's power switch is in the OFF position.
- Insert the DC power adapter plug firmly into your vehicle's 12V accessory outlet.
- Place the inverter on a stable, dry surface with good ventilation.
- You can now proceed to Section 6: Operation.
Note: This connection method is suitable for lower power demands. For full 400-watt output, direct battery connection is recommended.
5.2 Connecting Directly to Vehicle Battery
- Ensure the inverter's power switch is in the OFF position.
- Connect the RED battery clamp cable to the POSITIVE (+) terminal of your vehicle's 12V battery.
- Connect the BLACK battery clamp cable to the NEGATIVE (-) terminal of your vehicle's 12V battery.
- Connect the other end of the battery clamp cables to the DC input port on the inverter.
- Place the inverter on a stable, dry surface with good ventilation.
- You can now proceed to Section 6: Operation.
WARNING: Incorrect polarity connection will damage the inverter and may cause injury. Always connect RED to POSITIVE (+) and BLACK to NEGATIVE (-).
6. Operation
Once the inverter is properly connected to your vehicle's 12V power source:
- Turn on the inverter by pressing the power switch. The power indicator light should illuminate.
- Plug your AC-powered devices into the 110/120V AC outlets.
- Plug your USB-powered devices into the USB ports for charging.
- Ensure the total wattage of all connected AC devices does not exceed 400 watts.
- When finished, turn off the inverter using the power switch and disconnect devices.
For optimal performance and to prevent draining your vehicle's battery, it is recommended to operate the inverter with the vehicle's engine running, especially when powering high-wattage devices.
7. Maintenance
- Cleaning: Keep the inverter clean and free of dust and debris. Use a dry cloth to wipe the exterior. Do not use liquid cleaners.
- Fuse Replacement: The inverter is equipped with an internal fuse for short circuit protection. If the inverter stops working after a short circuit, the fuse may need replacement by a qualified technician. Do not attempt to open the unit yourself.
- Storage: When not in use, store the inverter in a cool, dry place, away from direct sunlight and moisture.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power output / Inverter not turning on |
|
|
| Low voltage alarm / Inverter shuts down |
|
|
| Overload shutdown |
|
|
| Overheat shutdown |
|
|
9. Specifications
| Feature | Detail |
|---|---|
| Model Number | PKC0BO |
| Continuous Power Output | 400 Watts |
| Input Voltage | 12V DC |
| Output Voltage | 110/120V AC |
| AC Outlets | 3 |
| USB Ports | 2 |
| Dimensions (L x W x H) | 10.75 x 5.75 x 3.14 inches |
| Item Weight | 0.01 ounces |
10. Warranty Information
Manufacturer warrants to the original consumer, or purchaser, that this PEAK Tailgate Inverter will be free from defects in material and workmanship for ninety (90) days from the date of sale to the original purchaser.
This warranty excludes and disclaims any and all other warranties, expressed or implied, beyond those specified above. Manufacturer excludes any implied warranty of merchantability or fitness for a particular purpose.
For warranty claims or support, please refer to the contact information provided with your purchase documentation or visit the official PEAK website.





