1. Introduction and Overview
The LiTHELi 12V Car Refrigerator (Model U20HW05-0A001) is a versatile 21QT/20L portable freezer and cooler designed for various outdoor activities and travel. It features rapid cooling capabilities, a wide temperature range, and multiple power options for convenience.
Key Features:
- Rapid Cooling: Achieves 32℉ from 77℉ in approximately 15 minutes.
- Wide Temperature Range: Operates between -4℉ to 68℉, functioning as both a freezer and a refrigerator.
- Triple-Layer Insulation: Maintains food freshness for up to 4 hours without power.
- Portable Design: Lightweight at 24.3 pounds, with an innovative backpack design for easy transport.
- Swappable Battery System: Powered by the Litheli U20 IPS Super Battery (sold separately or included in some variants), offering up to 6 hours of runtime and compatibility with other Litheli U20 series products. The battery can also function as a power bank.
- Multiple Power Options: Supports DC 12/24V (vehicle charging cable included) and AC 110/240V (AC power cord not included).
- High Capacity: 20-liter capacity with a 42.1% effective volume ratio, accommodating up to 10 cans of 330ml soda or 9 bottles of 550ml wine.
- Ultra-Quiet Operation: Noise levels as low as 35 decibels.
2. Package Contents and Setup
Before using your LiTHELi 12V Car Refrigerator, please ensure all components are present and follow the initial setup instructions.
2.1 What's Included:
- 1 x Litheli FrozenPack Portable Fridge
- 1 x Backpack Shoulder Strap
- 1 x Waist Belt
- 1 x Backpack Suspension System
- 1 x Vehicle Charging Cable (DC 12/24V)
- 1 x Detachable Top Box
- 2 x Detachable Side Pockets
- 1 x User Manual
- Note: Litheli U20 IPS Super Battery and AC 110/240V power cord are sold separately or included with specific variants.
2.2 Initial Setup:
- Unboxing: Carefully remove all items from the packaging. Inspect the refrigerator and accessories for any damage.
- Positioning: For optimal performance, place the refrigerator on a flat, stable surface. Ensure adequate ventilation around the unit. Avoid direct sunlight.
- Battery Installation (if applicable): If your model includes a Litheli U20 IPS Super Battery, locate the battery compartment (typically on the side or back) and insert the battery securely.
- Power Connection:
- DC Power (Vehicle): Connect the included vehicle charging cable to the DC 12/24V input port on the refrigerator and to your vehicle's cigarette lighter socket.
- AC Power (Home/Wall Outlet): If using an optional AC 110/240V power cord, connect it to the AC input port on the refrigerator and then to a wall outlet.
- First Use: After connecting to power, allow the refrigerator to stand upright for at least 12 hours before turning it on to ensure proper compressor operation.

Image: The LiTHELi 12V Car Refrigerator with its backpack straps and detachable side pockets, ready for transport.

Image: Internal view of the LiTHELi 12V Car Refrigerator demonstrating its capacity with bottles and cans.
Video: An operational guide demonstrating the features and usage of a similar portable car refrigerator, including power connections and basic functions.
3. Operating Instructions
The LiTHELi 12V Car Refrigerator features an intuitive control panel for easy temperature adjustment and mode selection.
3.1 Control Panel Overview:

Image: Close-up of the control panel with power, settings, and temperature adjustment buttons, along with an LED display.
- Power Button (⏻): Press and hold for 3-5 seconds to power the unit on or off.
- Settings Button (⚙): Used to access various settings, including temperature adjustment and Max/Eco mode switching.
- Temperature Adjustment Buttons (+/-): Use to increase or decrease the desired temperature.
- LED Display: Shows current temperature, battery voltage, and operating mode (ECO/MAX).
3.2 Temperature Adjustment:
- Press the Settings button (⚙) once. The temperature display will flash.
- Use the + or - buttons to set your desired temperature. The temperature range is -4℉ to 68℉.
- The display will stop flashing after a few seconds, indicating the new temperature is set.
3.3 Max/Eco Mode Switching:
- Press the Settings button (⚙) twice.
- Use the + or - buttons to toggle between "MAX" (for faster cooling) and "ECO" (for energy saving) modes.
3.4 Fahrenheit/Celsius Switching:
To switch between Fahrenheit (℉) and Celsius (℃):
- Press and hold both the + and - buttons simultaneously for 3 seconds. The unit will switch temperature scales.
3.5 Vehicle Battery Protection Level Adjustment:
This feature protects your vehicle's battery from excessive discharge.
- Press the Settings button (⚙) three times.
- Use the + or - buttons to select the desired protection level: H (High), M (Medium), or L (Low).
- The display will stop flashing after a few seconds, indicating the new setting is saved.
Video: Demonstrates how to use the control panel for power on/off, temperature adjustment, and mode switching on a portable car refrigerator.
4. Maintenance
Regular maintenance ensures the longevity and optimal performance of your LiTHELi 12V Car Refrigerator.
- Cleaning: Regularly clean the interior and exterior of the refrigerator with a damp cloth and mild detergent. Do not use abrasive cleaners or harsh chemicals. Ensure the unit is unplugged before cleaning.
- Defrosting: If ice builds up inside, manually defrost the unit by turning it off and leaving the lid open until the ice melts. Wipe away any water.
- Ventilation: Keep the ventilation grilles clear of dust and debris to ensure proper airflow and prevent overheating.
- Storage: When not in use for extended periods, ensure the refrigerator is clean, dry, and stored with the lid slightly ajar to prevent odors and mold growth.
5. Troubleshooting
If you encounter issues with your refrigerator, refer to the following common troubleshooting steps:
- Unit Not Turning On:
- Check if the power cable is securely connected to both the refrigerator and the power source.
- Verify that the power source (vehicle outlet or wall outlet) is functioning correctly.
- If using a battery, ensure it is charged and properly installed.
- Not Cooling Effectively:
- Ensure the temperature setting is appropriate for your needs.
- Check that the ventilation grilles are not blocked.
- Avoid placing the refrigerator in direct sunlight or excessively hot environments.
- Ensure the lid is properly sealed.
- Unusual Noise:
- Ensure the unit is on a stable, flat surface to prevent vibrations.
- Check for any loose items inside or around the compressor area.
For further assistance, please contact customer service.
6. Specifications
| Feature | Specification |
|---|---|
| Brand | LiTHELi |
| Model Info | U20HW05-0A001 |
| Item Weight | 33 pounds |
| Product Dimensions | 11.8 x 18.5 x 16.9 inches |
| Capacity | 20 Liters (21QT) |
| Temperature Range | -4℉ to 68℉ |
| Voltage | 20 Volts (DC 12/24V, AC 110/240V) |
| Annual Energy Consumption | 98 Kilowatt Hours |
| Defrost System | Manual Defrost |
| Special Features | Portable, Backpack Design, Battery Powered (optional) |
7. Warranty and Support
LiTHELi is committed to providing high-quality products and excellent customer service.
- Technical Support: Professional technical support is included with your purchase. If you have any questions or require assistance, please contact LiTHELi customer service.
- Protection Plans: Extended protection plans are available for purchase, including 2-Year and 3-Year options.
- Returns: This product is eligible for 30-day easy returns.
For detailed warranty information and to contact support, please refer to the official LiTHELi website or your purchase documentation.
8. Important Precautions
- Avoid placing the refrigerator in direct sunlight, as this may cause it to work harder, increase energy consumption, and potentially shorten its lifespan.
- Do not store flammable, explosive, toxic, or strongly corrosive substances inside the refrigerator.
- Ensure the refrigerator is placed on a stable surface to prevent tipping.
- Do not block the ventilation openings.





