Introduction
The Giandel 300W Pure Sine Wave Power Inverter is designed to provide reliable AC power from your vehicle's 12V DC outlet. It features 300 watts of continuous power, two standard AC outlets, and advanced USB charging ports, including PD30W Type-C and QC 3.0 USB. This inverter is ideal for powering sensitive electronics, ensuring a clean and stable power supply for devices such as laptops, smartphones, tablets, and other small appliances.
Safety Information
This power inverter incorporates multiple safety features to protect both the device and your connected electronics.
- Full Protection: Includes safeguards against overheating, under and over voltage, short circuits, and overload.
- Isolation Protection: Designed with isolation protection for enhanced safety.
- UL Approved Fuses: Equipped with easily replaceable UL approved fuses to prevent fire and electric shock.
- Heat Management: The aluminum alloy housing and smart cooling fan help dissipate heat efficiently. Avoid placing the inverter on surfaces that may melt or be damaged by heat during prolonged high-power use.
Always ensure proper ventilation around the inverter during operation.

Image: Banner highlighting the superior safety features of the Giandel 300W Pure Sine Wave Power Inverter, including short circuit, overload, overheat, low voltage, isolated input/output, and over-voltage protection.
Package Contents
Your Giandel 300W Pure Sine Wave Power Inverter package includes:
- Giandel 300W Pure Sine Wave Power Inverter Unit
- User Manual
- Cigarette Lighter Power Cable (28 inches)
- Extra Fuses (2 pieces)
- Reusable Velcro straps

Image: Contents of the Giandel 300W Pure Sine Wave Power Inverter package, including the inverter unit, user manual, extra fuses, reusable Velcro, and the 28-inch cigarette lighter power cable.
Setup
- Ensure your vehicle's engine is running or the ignition is in the "ACC" position to provide power to the cigarette lighter socket.
- Insert the cigarette lighter plug of the inverter's power cable firmly into your vehicle's 12V cigarette lighter socket.
- Locate the ON/OFF switch on the inverter and switch it to the "ON" position. The power indicator light should illuminate, indicating the inverter is ready for use.

Image: The Giandel 300W Pure Sine Wave Power Inverter connected via its cigarette lighter plug in a vehicle, demonstrating its wide range of applications for various electronic devices.
Operating Instructions
The inverter provides multiple output options for charging and powering your devices.
AC Outlets
Plug your 110V AC devices (up to 300 watts continuous power) into the two standard AC outlets on the inverter. Ensure the total wattage of connected devices does not exceed 300W.
USB Charging Ports
The inverter features both PD30W Type-C and QC 3.0 USB-A ports for fast charging. Connect your compatible smartphones, tablets, and other USB-powered devices to these ports. The ports automatically detect your device to deliver the fastest possible charge speed, up to 3.6 amps (32 watts).

Image: The Giandel 300W Pure Sine Wave Power Inverter connected to a laptop and smartphone, highlighting its pure sine wave output, high conversion efficiency, low total harmonic distortion (THD), and fast charging capabilities via PD30W USB-C and QC 3.0 USB ports.
Power/Fault Indicator
A power/fault indicator light is present on the inverter. A green light typically indicates normal operation, while a red light or no light may indicate a fault or power issue.
Silent Cooling Fan
The inverter is equipped with a smart cooling fan that operates based on temperature and power load. This ensures efficient heat dissipation while maintaining quiet operation.

Image: Diagram illustrating the silent cooling fan mechanism within the Giandel 300W Pure Sine Wave Power Inverter, designed to keep the unit cool and quiet during operation.
Maintenance
Fuse Replacement
The inverter uses UL approved replaceable fuses. If the inverter stops working due to an overload or short circuit, the fuse may need replacement.
- Disconnect all devices from the inverter and unplug the inverter from the vehicle's power source.
- Locate the fuse compartment (refer to the diagram in the original user manual for exact location).
- Carefully remove the old fuse and replace it with one of the provided extra fuses (30 amps).
- Securely close the fuse compartment.

Image: Close-up view of the Giandel 300W Pure Sine Wave Power Inverter showing the easily replaceable UL approved fuse, emphasizing protection against electrical issues.
General Care
Keep the inverter clean and free from dust and debris. The aluminum alloy housing provides durability and protection.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter not turning on | Loose connection, vehicle power off, blown fuse | Check cigarette lighter connection, ensure vehicle power is on, replace fuse if blown. |
| No power output from AC outlets | Overload, low battery voltage, inverter fault | Reduce connected load, check vehicle battery, restart inverter. |
| No power output from USB ports | Device incompatibility, inverter fault | Ensure device is compatible with PD30W/QC3.0, restart inverter. |
| Inverter is hot | High load, poor ventilation | Ensure adequate ventilation, reduce load. The smart fan should activate to cool the unit. |
For persistent issues, refer to the warranty and support section.
Specifications
- Model Name: PS-300B PD30W
- Wattage: 300 watts (Continuous)
- Power Source: DC 12V
- Output Voltage: 110V AC
- USB-C Output: PD30W
- USB-A Output: QC 3.0 (Dual ports, up to 3.6A/32W total)
- Waveform: Pure Sine Wave
- Housing Material: Aluminum Alloy
- Item Weight: 1.65 pounds
- Package Dimensions: 9.33 x 8.66 x 2.28 inches
- Recommended Uses: Vehicle
- Manufacturer: GIANDEL
Warranty and Support
Giandel provides an 18-month warranty for this product. Product liability is covered by AIG.
For any questions, technical assistance, or warranty claims, please contact Giandel customer support. They offer 7*24h friendly customer support.
For more information, visit the official Giandel store on Amazon: Giandel Store





