Giandel PS-300B-CAR
GIANDEL 300W Pure Sine Wave Power Inverter User Manual
Model: PS-300B-CAR
Brand: Giandel
1. Introduction
This manual provides essential information for the safe and efficient operation of your GIANDEL 300 Watt Pure Sine Wave Car Power Inverter. This device converts 12V DC power from your vehicle's battery into 120V AC household power, featuring USB-C PD 30W and QC3.0 USB ports, along with two standard AC outlets. It is designed for powering various electronic devices such as Starlink terminals, tablets, laptops, and smartphones.
2. Safety Information
Please read and understand all safety warnings and instructions before using 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 block the cooling fan or vents. Overheating can cause the unit to shut down.
- Environment: Do not expose the inverter to water, rain, snow, or excessive moisture. Avoid operating in direct sunlight or near heat sources.
- Connection: Connect the inverter directly to a 12V DC power source (e.g., vehicle cigarette lighter socket). Ensure the vehicle is running when powering high-wattage devices to prevent battery drain.
- Load Capacity: Do not exceed the inverter's rated continuous power output of 300 Watts. Overloading will trigger safety protections and may damage the unit or connected devices.
- Polarity: Always ensure correct polarity when connecting to the power source. Incorrect connection can cause damage.
- Safety Protections: The inverter is equipped with multiple safety features including over-voltage, low-voltage, overload, short-circuit, and over-heat protections. It also features an isolated input/output design for enhanced safety.
- Fuses: The inverter includes replaceable fuses for protection. If a fuse blows, replace it with one of the same type and rating.
- Children: Keep the inverter out of reach of children.
3. Package Contents
- GIANDEL 300W Pure Sine Wave Power Inverter (Model: PS-300B-CAR)
- Cigarette Lighter Plug Cable
- Spare Fuses
- User Manual
4. Product Overview
The GIANDEL 300W Pure Sine Wave Power Inverter is designed for portability and efficiency. Its durable aluminum alloy housing provides advanced protection against drops and bumps.

Figure 1: Front view of the GIANDEL 300W Pure Sine Wave Power Inverter, showing the cigarette lighter plug, two standard AC outlets, and the USB-C PD 30W and QC3.0 USB ports.

Figure 2: Illustration of the inverter's heat dissipation system, featuring a super silent cooling fan that activates when the temperature exceeds 104°F (41°C) or load exceeds 100W, and a replaceable fuse for circuit protection.

Figure 3: Physical dimensions of the inverter, showing its compact size for portability and ease of storage.
Key Features:
- Pure Sine Wave Output: Provides clean and stable power, suitable for sensitive electronics.
- Dual Smart USB Charging Ports: Automatically detects devices for optimal charging speed (up to 3.6A).
- USB-C PD 30W Port: Fast charging for compatible devices.
- QC3.0 USB Port: Quick Charge 3.0 for rapid device charging.
- Two AC Outlets: Standard 120V AC outlets for various appliances.
- Compact Design: Travel-sized and lightweight for easy portability.
- Smart Cooling Fan: Operates silently and activates only when necessary to reduce heat.
- Durable Construction: Strong aluminum alloy housing for enhanced protection.
5. Setup
- Vehicle Preparation: Ensure your vehicle's engine is running to provide stable power and prevent battery drain, especially when using high-wattage devices.
- Inverter Placement: Place the inverter on a stable, flat surface in a well-ventilated area. Ensure the cooling fan and vents are unobstructed.
- Connect to Power Source: Insert the cigarette lighter plug of the inverter firmly into your vehicle's 12V DC cigarette lighter socket.
- Power On: Flip the ON/OFF switch on the inverter to the "ON" position. The power indicator light should illuminate, indicating the inverter is ready for use.
6. Operating Instructions
Once the inverter is set up and powered on, you can connect your devices.

Figure 4: Examples of devices and environments where the inverter can be effectively used, demonstrating its versatility.
- Check Device Wattage: Before connecting any device, verify its power consumption (wattage). Ensure the total wattage of all connected devices does not exceed the inverter's continuous output of 300 Watts.
- Connect Devices:
- For AC-powered devices, plug them into the 120V AC outlets on the inverter.
- For USB-powered devices, connect them to the USB-C PD 30W port or the QC3.0 USB port. The smart charging feature will automatically detect your device and deliver the fastest possible charge speed.
- Monitor Operation: Observe the inverter's indicator lights. If an error light illuminates or an alarm sounds, refer to the Troubleshooting section.
- Disconnect After Use: When finished, turn off the inverter using the ON/OFF switch, then disconnect it from the vehicle's cigarette lighter socket.
7. Maintenance
Proper maintenance ensures the longevity and optimal performance of your inverter.
- Cleaning: Regularly clean the exterior of the inverter with a dry, soft cloth. Do not use abrasive cleaners or solvents.
- Ventilation: Keep the cooling fan and vents free from dust and debris. Use compressed air to clear any blockages if necessary.
- Storage: Store the inverter in a cool, dry place away from direct sunlight and moisture when not in use.
- Fuse Replacement: If a fuse blows, replace it with a spare fuse of the same type and rating. Refer to the Troubleshooting section for guidance.
- Physical Inspection: Periodically inspect the inverter and its cables for any signs of damage, wear, or loose connections. The strong and durable aluminum alloy housing is designed to protect against drops and bumps.
8. Troubleshooting
This section addresses common issues you might encounter with your power inverter.
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter not powering on. |
|
|
| Inverter shuts down or alarm sounds. |
|
|
| Devices not charging or charging slowly. |
|
|
9. Specifications
| Feature | Detail |
|---|---|
| Model Name | PS-300B-CAR |
| Wattage (Continuous) | 300 Watts |
| Surge Power | 600 Watts |
| Input Voltage | DC 12V |
| AC Output Voltage | 110-120V AC / 60Hz |
| USB Output (QC3.0) | Up to 3.6 Amps (Smart Charging) |
| USB-C Output (PD) | 30W Max |
| Waveform | Pure Sine Wave |
| Total Harmonic Distortion (THD) | Less than 3% |
| Efficiency | Up to 91% |
| Idle Current | 0.3 Amps (3.6 Watts) only |
| Product Dimensions | 6.22 x 4.13 x 1.77 inches |
| Item Weight | 1.65 pounds |
| Housing Material | Durable Aluminum Alloy |
10. Warranty and Support
The GIANDEL 300W Pure Sine Wave Power Inverter comes with an 18-Months Warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.
For warranty claims, technical support, or any inquiries, please contact Giandel customer service. Refer to the contact information provided on the product packaging or the official Giandel website.
Note: The warranty does not cover damage caused by misuse, neglect, unauthorized modifications, or natural disasters.
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