AAOBOSI 22 Quart (20L) Portable Car Refrigerator

1. Introduction

Thank you for choosing the AAOBOSI 22 Quart (20L) Portable Car Refrigerator. This versatile appliance is designed to keep your food and beverages cool or frozen, whether you're on the road, camping, or at home. Its robust design and efficient cooling system make it an ideal companion for various outdoor and indoor activities. This manual provides essential information for safe operation, setup, maintenance, and troubleshooting to ensure optimal performance and longevity of your unit.

The AAOBOSI portable car refrigerator, shown with its lid open, filled with various beverages and fruits, demonstrating its capacity. A hand holds a smartphone displaying the control app, highlighting the smart control feature.

This image illustrates the diverse applications of the portable refrigerator, showcasing its use in an RV, car, truck, boat, during fishing trips, and while camping, emphasizing its versatility.

2. Important Safety Information

• Read all instructions before using the appliance.
• Do not operate the refrigerator if the power cord is damaged. Contact customer support for assistance.
• Ensure proper ventilation around the unit. Do not block air vents.
• Avoid placing the refrigerator in direct sunlight or near heat sources.
• The unit is designed for use with 12/24V DC and 110-240V AC power sources. Use only approved power adapters.
• Do not immerse the unit in water or expose it to excessive moisture.
• When operating in a vehicle, ensure the unit is securely placed to prevent movement during transit.
• The maximum recommended tilt angle for long-term operation is 5 degrees. For short periods, it can withstand up to 45 degrees.
• Keep out of reach of children.

3. Package Contents

Upon unpacking, please verify that all items listed below are present and in good condition:

• AAOBOSI Portable Car Refrigerator (Model UL-T20A)
• DC Power Cable (12/24V for car/truck use)
• AC Power Adapter (110-240V for home use)
• User Manual

4. Product Features

• Dual Storage Area & Capacity: Features a large storage area and a smaller, separate area to reduce odor transfer. The 22 Quart (20L) HIPS liner is suitable for various items including ice cream, seafood, and meats.


A visual representation of the refrigerator's internal capacity and external dimensions, highlighting its ability to store up to 32 cans or 20 water bottles within its 22-quart volume.



This image displays the two primary operating modes: Freezer Freezing Mode, suitable for items requiring deep freezing, and Refrigerator Freshness Mode, ideal for keeping produce and drinks chilled. It also shows the dual compartment design.

• Fast and Effective Cooling: Equipped with a high-quality compressor, capable of cooling rapidly from -4°F to 68°F (-20°C to 20°C).


A graph demonstrating the rapid cooling capability of the upgraded compressor, showing how quickly the internal temperature drops from ambient to desired levels.

• Energy Efficient: Operates in MAX/ECO modes, consuming minimal energy (less than 1kWh/day in ECO mode).


This graphic highlights the energy efficiency of the unit, comparing the power consumption of ECO mode (45W) for sustained cooling with MAX mode (60W) for rapid temperature reduction.

• 3-Level Battery Protection: Prevents draining your vehicle's battery by automatically shutting off at a user-selected voltage level.


A detailed chart explaining the three levels of battery protection (H1, N2, L3) and their corresponding cut-off and cut-in voltages for both 12V and 24V vehicle systems, designed to prevent battery drain.

• Ultra-Low Noise: Operates quietly with a noise level below 45dB, ensuring a peaceful environment.


The refrigerator is shown with its contents, emphasizing its quiet operation with a visual indicator of less than 45dB noise level, ensuring minimal disturbance.

• Multiple Power Supply Modes: Supports 12V/24V DC for vehicles and 110-240V AC for home use. Also features a USB port for charging mobile devices.


This image details the various power input options for the refrigerator, including direct connection to a 12V/24V car or truck, compatibility with solar panel and battery stations, standard home outlets (100-240V), and a USB port for charging small devices.

• Built-in LED Light: Provides illumination inside the cooler for convenience in low-light conditions.


The interior of the refrigerator is shown illuminated by a built-in LED light, ensuring visibility of contents even in dark environments.

5. Setup Guide

1. Unpacking: Carefully remove the refrigerator from its packaging. Retain packaging for future storage or transport.
2. Placement: Place the unit on a flat, stable surface. Ensure there is adequate space (at least 6 inches) around all sides for proper ventilation. Avoid placing it on soft surfaces like carpets that might block air vents.
3. Initial Cleaning: Before first use, wipe the interior and exterior with a damp cloth and mild detergent. Rinse thoroughly and dry completely.
4. Power Connection:
   • For Vehicle Use (DC 12/24V): Connect the DC power cable to the DC input port on the refrigerator. Plug the other end into your vehicle's 12V or 24V power outlet (cigarette lighter socket).
   • For Home Use (AC 110-240V): Connect the AC power adapter to the AC input port on the refrigerator. Plug the adapter into a standard wall outlet.

This video demonstrates the compact design, interior LED light, dual storage space, smart touch screen operation, smartphone app remote control, fast cooling capability, USB charging port, pull-out drain plug for easy cleaning, and the DC 12V/24V power connection for vehicle use. It provides a comprehensive visual guide to the product's features and basic setup.

6. Operation Instructions

1. Power On/Off: Press the 'ON/OFF' button on the control panel to turn the unit on or off. The display will illuminate when powered on.
2. Temperature Setting: Use the '+' and '-' buttons to adjust the desired temperature. The display will show the current and target temperatures.
3. Mode Selection (MAX/ECO): Press the 'SET' button repeatedly to cycle through cooling modes. 'MAX' provides rapid cooling, while 'ECO' is for energy-efficient operation.
4. Battery Protection Setting: Press and hold the 'SET' button for 3 seconds to enter the battery protection setting. Use '+' or '-' to select H (High), M (Medium), or L (Low) protection level. This prevents your vehicle battery from fully discharging.
5. Smartphone App Control:
   • Download the official AAOBOSI app from your smartphone's app store.
   • Enable Bluetooth on your smartphone.
   • Open the app and follow the on-screen instructions to pair with your refrigerator.
   • Once connected, you can monitor temperature, adjust settings, and switch modes remotely.

A detailed view of the refrigerator's control panel, showing the temperature display, power button, settings button, and temperature adjustment buttons. It also indicates the Bluetooth connection feature.

This image shows the refrigerator being controlled remotely via a smartphone app, demonstrating the convenience of adjusting settings from a distance.

7. Care and Maintenance

• Cleaning: Regularly clean the interior and exterior of the refrigerator with a soft cloth and mild detergent. Do not use abrasive cleaners or harsh chemicals.
• Drainage: The unit features a removable spout for quick internal cleanup. Open the drain plug to remove any accumulated water.
• Defrosting: This unit features manual defrost. If ice builds up, turn off the unit and allow the ice to melt naturally. Use a soft cloth to wipe away melted water. Do not use sharp objects to remove ice.
• Ventilation: Keep the ventilation openings clear of any obstructions to ensure efficient operation.
• Storage: When not in use for extended periods, ensure the unit is clean and dry. Store it in a cool, dry place with the lid slightly ajar to prevent odors and mold growth.

8. Troubleshooting

If you encounter issues with your AAOBOSI Portable Car Refrigerator, please refer to the following common problems and solutions:

9. Technical Specifications

10. Warranty and Support

For warranty information, product registration, or technical support, please refer to the documentation included with your purchase or contact AAOBOSI customer service directly through the retailer's platform or the official brand website. Please have your model number (UL-T20A) and purchase details ready when contacting support.