Introduction
This manual provides essential information for the proper use and maintenance of your FORABEST 1.5L Replacement Stainless Steel Container. This container is specifically designed as a replacement or additional inner container for the FORABEST Model YY-3166 Electric Lunch Box. It offers a healthy and eco-friendly solution for carrying and heating your meals.
Important Safety Information
- Always ensure the container is clean before placing food inside.
- While the container material is microwave safe, always refer to your electric lunch box manual for heating instructions. Do not place the entire electric lunch box in a microwave.
- Handle the container with care when it contains hot food, as the stainless steel can retain heat.
- Keep the container out of reach of children when not in use or when it contains hot contents.
Product Overview
The FORABEST 1.5L Replacement Stainless Steel Container is crafted from durable 304 food-grade stainless steel, ensuring safety and longevity. It features two distinct compartments, allowing you to separate different food items within your meal.

This image shows the stainless steel inner container, featuring two distinct compartments for food separation.

A top-down perspective of the container, highlighting its rectangular shape and the internal divider.

This image illustrates the approximate dimensions of the container: 7.5 inches in length, 5.2 inches in width, and 2.2 inches in height.
Compatibility
This stainless steel container is only compatible with the FORABEST Model YY-3166 1.5L Electric Lunch Box. Please verify the model number of your electric lunch box before attempting to use this replacement container.

The stainless steel container is shown alongside the FORABEST electric lunch box (Model YY-3166) it is designed to fit, demonstrating their intended pairing.
Initial Setup
- Unpack the stainless steel container from its packaging.
- Before first use, wash the container thoroughly with warm soapy water.
- Rinse completely to remove all soap residue.
- Dry the container thoroughly with a soft cloth to prevent water spots.
- Ensure the container is completely dry before placing it into your FORABEST YY-3166 Electric Lunch Box.
Operating Instructions
Filling the Container
Place your desired food items into the two compartments of the stainless steel container. Avoid overfilling to ensure the lid of your electric lunch box can close properly and securely.
Placement in Electric Lunch Box
Carefully insert the filled stainless steel container into the main compartment of your FORABEST YY-3166 Electric Lunch Box. Ensure it sits securely and flat within the heating element area.
Heating Food
This container is designed to safely hold food during the heating process within the compatible electric lunch box. For specific instructions on how to operate and heat food using your electric lunch box, please refer to the user manual of your FORABEST YY-3166 Electric Lunch Box.
Maintenance and Care
Cleaning
The FORABEST 1.5L Replacement Stainless Steel Container is dishwasher safe for convenient cleaning. For best results and to prolong its lifespan, hand washing with mild dish soap and warm water is recommended.
For stubborn food residues, soak the container in warm soapy water for a few minutes before cleaning. Use a non-abrasive sponge or cloth to prevent scratching the stainless steel surface. Rinse thoroughly after washing.
Storage
Store the clean and dry container in a cool, dry place when not in use. Ensure it is completely dry before storage to prevent water spots or mineral buildup.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Container does not fit in lunch box. | Incorrect lunch box model or container not seated properly. | Verify your electric lunch box is the FORABEST Model YY-3166. Ensure the container is placed correctly and no food is obstructing its fit. |
| Food not heating evenly. | Issue with the electric lunch box, not the container. | Refer to the troubleshooting section of your FORABEST YY-3166 Electric Lunch Box manual. |
| Container appears stained or discolored. | Mineral deposits from water or certain foods. | Clean with a mixture of vinegar and water, or a stainless steel cleaner. Rinse thoroughly. |
Product Specifications
- Model Compatibility: FORABEST YY-3166 Electric Lunch Box
- Capacity: 1.5 Liters
- Material: 304 Food-Grade Stainless Steel
- Number of Compartments: 2
- Color: Silver
- Approximate Dimensions (L x W x H): 7.5 x 5.2 x 2.2 inches
- Care: Dishwasher Safe
- Item Weight: 7 ounces
Warranty and Customer Support
This FORABEST product is designed for durability and performance. For specific warranty information regarding your FORABEST YY-3166 Electric Lunch Box and its components, including this replacement container, please refer to the original product manual that came with your electric lunch box.
For further assistance, inquiries, or to purchase additional FORABEST products, please visit the official FORABEST store on Amazon: FORABEST Amazon Store.