Battery-Powered Convenience Our cordless lunch box food heater lets you enjoy hot meals anywhere—no plug needed! The high-capacity battery powers one full thermal cycle per charge, providing 2 hours of heating and 1 hour of heat retention. Simply recharge nightly with the included adapter to ensure it’s ready for the next day. Battery Care Tips: 1. Fully charge the lunch box electric before first use. 2. Check the battery level before each use; it should be at least 90%. 3. If the rechargeable lunch box is not used for an extended period, recharge it at least once a month to prevent deterioration. 4. Only use the original charger; other chargers may cause permanent damage. Smart Scheduled Heating Say goodbye to complicated countdowns! Our electric lunch box food heater allows you to set your mealtime directly. Its memory function saves your settings, enabling daily auto-start without reprogramming. Setup Instructions: 1. Set the current time to match the actual time, then schedule your desired mealtime. 2. Ensure the food heater lunch box is powered on at least 2 hours before the scheduled time for automatic heating. Instant Heating Mode This mode skips scheduled settings and starts a full 2-hour heating cycle immediately—perfect for unplanned meals or sudden schedule changes. For routine use, scheduled heating is recommended. 220°F Thorough Heating The heating plate reaches temperatures up to 220°F, adjustable between 170°F and 220°F. With a 2-hour cycle, the heated lunchbox for adults ensures that even dense dishes like stews are thoroughly heated while retaining moisture and texture. Heating Tips: 1. The display shows the temperature of the heating plate, while the food temperature is slightly lower to prevent burns and preserve flavor. 2. Place the lunch heater portable for work in the insulated bag to optimize heating and heat retention. 3. Ensure food contains moisture; our warm lunch box for adults utilizes the moisture inside the food to generate steam for thorough heating. It works best with foods that contain higher moisture, such as pasta, meats, vegetables, stews, and saucy dishes, etc. If the food is dry, spritz a little water inside the container to enhance heating. 4. Ensure food contacts the container bottom for effective heating. The heated lunch box cordless heats from the bottom, so for irregularly shaped items like chicken legs, add a bit of sauce or water to boost steam and enhance the heating process. 5. For more thorough heating, increase the temperature or set the mealtime 20-30 minutes earlier to allow for extended keep-warming time. 6. For best results with frozen food, we highly recommend thawing it in the fridge overnight.