How the Five Compare on the Numbers
Six boxes were in this pool and one is not here. TRAVELISIMO publishes 1.5 liters, 100 watts and the same 12, 24 and 110 volt set as the SOHIDA, and then stops: no seal described, no accessory list, no steel grade, no temperature. The SOHIDA occupies the same corded 1.5 liter position and publishes four times as much, so there was nothing for the second listing to add.
The line that splits the five is not capacity, it is whether the box needs a socket. EAST OAK runs from a 10,000 mAh battery and THZDMI from a rechargeable battery with a charge display. The other three plug in, and SOHIDA, LISHZEN and DUPASU all ship car cords as well as mains cords. That single difference changes what else each listing bothers to publish.
What the table cannot do is turn a capacity into a lunch. EAST OAK is the only listing that tries: it says 5.5 cups is about three servings of pasta, or twelve frozen dumplings, or one serving of lasagna with soup. Every other figure here is a volume and nothing more, and the two boxes with a second compartment split that volume in ways their headline numbers do not show.
Cordless Against Corded
What a Battery Buys and What It Costs
EAST OAK and THZDMI both heat without an outlet, which is the only real answer for a site with no power and no cigarette socket. EAST OAK states a 10,000 mAh battery and describes it as one heating cycle. THZDMI states up to 3 hours of active heating and up to 6 hours of total warmth, with a display showing the charge left.
What both give up is wattage. Neither publishes one, so how fast either heats a cold meal cannot be compared with the corded boxes, which publish 80 or 100 watts and a time in minutes. A battery box also has a charge cycle to plan around, and neither listing says how long a recharge takes.
Three Cords, and One That Works Abroad
The three corded boxes all cover a car and an office, but not identically. SOHIDA states 12, 24 and 110 volts. LISHZEN ships both a 12 and 24 volt car cord and a 110 volt cord in the box, listed as separate items. DUPASU goes further and states 110 to 230 volts alongside 12 and 24, which is the only listing here that covers a socket outside North America.
Corded also means a stated heating time, and all three publish one: 20 to 30 minutes for LISHZEN and DUPASU, 25 to 40 minutes for the 80 watt SOHIDA. That difference tracks the wattage, and it is the closest thing to a performance figure anywhere in this pool.
One Listing Publishes Temperatures, Four Do Not
212 Degrees, Plus or Minus 5
THZDMI is the only box here that says how hot the food gets. Its listing states a 5 sided surround heating design giving 360 degree distribution with a variance of plus or minus 5 degrees Fahrenheit, reaching up to 212 degrees, and a separate keep warm mode holding 149 degrees Fahrenheit, or 65 Celsius. It also claims to retain over 90% of moisture.
Whether you believe the moisture figure or not, the temperature and the tolerance are checkable claims in a category that normally publishes neither. The other four publish wattage or battery capacity, which describe the heater rather than the food, and a time in minutes, which describes the wait rather than the result.
Four Modes and a Twelve Hour Clock
THZDMI’s control set is the other thing no rival matches: four modes, for refrigerated food, room temperature food, a free mode where time and temperature are both set by hand, and keep warm. Scheduling runs up to 12 hours ahead, and the touch panel has an anti mistouch lock so it does not switch on inside a bag.
EAST OAK has the only other timer, and it works differently: it heats in advance so the meal is hot at a set time, and it remembers the last setting so the same commute does not need resetting. SOHIDA, LISHZEN and DUPASU have no timer at all. You plug them in and wait the stated minutes.
Capacity, Compartments and What You Can Actually Heat
2.8 Liters That Are Really Two Containers
LISHZEN publishes the largest capacity here, 2.8 liters, and it is worth reading carefully: 1.8 liters of stainless steel for a main course plus a 1 liter compartment for fruit, salad or snacks. Crucially the listing says you can heat both layers or the steel layer alone, which makes the second compartment usable rather than decorative.
SOHIDA and DUPASU both have a second box too, 0.45 liters each, and both print the same warning: it cannot be heated, and it will melt if you try. So SOHIDA’s real heated capacity is 1.5 liters and DUPASU’s is 1.8, and only LISHZEN’s headline figure is heatable from end to end.
Where the Small Boxes Sit
THZDMI is the smallest capacity of the five at 1.2 liters, given also as 41 ounces, in a body its fields put at 8.66 by 7.28 inches with 6.93 inches of height. It publishes no weight at all. EAST OAK is next at 1.3 liters, and it is the only listing that converts that into cups and ounces both, 5.5 cups and 44 ounces.
EAST OAK also has a removable divider rather than a separate box, so the single container can be split or used whole, and the divider goes in the dishwasher with the container, lid, fork and spoon. Its fields give 8.0 by 9.0 inches with 12.0 inches of height, which is a taller box than either of the others publishing fields.
Which One Fits Your Kitchen
Anyone who needs a figure, not a promise. THZDMI is the only box publishing a temperature, up to 212 degrees Fahrenheit with a variance of plus or minus 5, plus four heating modes, a 12 hour schedule and a keep warm setting at 149 degrees. It publishes no weight and no wattage.
A site with no socket and no car. EAST OAK’s 10,000 mAh battery heats without an outlet, its timer heats ahead of a set mealtime and remembers the last setting, and 5.5 cups is the only capacity here translated into actual meals. At 2.8 pounds it is not a light bag.
A main course and a side, both hot. LISHZEN is 2.8 liters as 1.8 liters of 304 stainless plus a 1 liter compartment, and it is the only pick whose second layer can be heated. Both cords are in the box. At 2.89 pounds it is the heaviest of the three that publish a weight.
A truck cab, a desk and a wall socket. SOHIDA covers 12, 24 and 110 volts at 80 watts, heating in a stated 25 to 40 minutes, and is the only pick in the pool with a warranty period. At 1.54 pounds it is the lightest of the five, in a body of 6.69 by 8.46 by 4.02 inches.
Work that crosses a border. DUPASU is the only listing stating 110 to 230 volts as well as 12 and 24, which covers sockets the other four do not. It is 1.8 liters plus a 0.45 liter salad box at 100 watts, and it publishes neither a size nor a weight.
What We Could Not Verify
Every figure above comes from the makers’ own listings. These are the things we went looking for and could not source.
- Neither battery box publishes a wattage, so how fast either heats cannot be compared with the corded picks.
- Neither battery box publishes a recharge time, so the turnaround between two hot meals is unknown.
- Four of the five publish no temperature at all, so only one listing says how hot the food actually gets.
- THZDMI and DUPASU publish no weight, and LISHZEN and DUPASU publish no dimension fields.
- No listing states whether the heating base is repairable or whether a replacement seal can be bought.
- Only SOHIDA publishes a warranty period, and the two battery boxes, which have the part most likely to fail, publish none.
