Woltu KUE010gr
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The WOLTU KUE010gr: a 22-litre thermoelectric electric cool box, hot or cold, for dual car and home use on 12V as well as 230V.
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Key features
- Capacity: 22 litres gross (19 litres net)
- Type: Thermoelectric (Peltier module), hot and cold functions
- Power supply: 12V DC (cigarette lighter) and 230V AC (mains)
- Dual hot/cold function, light at just 4.4 kg
In detail: WOLTU KUE010gr, 22L thermoelectric cool box
The WOLTU KUE010gr is a 22-litre gross (19-litre net) thermoelectric electric cool box, made by German brand WOLTU, which specialises in outdoor products and small appliances for home and car. Unlike a compressor cooler, it relies on a Peltier module with no refrigerant gas or mechanical compressor, making it lighter and quieter, at the cost of a more modest temperature drop.
Its dual hot/cold function lets it cool down to 18 to 22°C below ambient temperature, or conversely keep a dish warm up to 65°C by simply reversing the module's direction. It runs equally well plugged into a vehicle's 12V cigarette lighter socket or a 230V mains socket at home, a real advantage in versatility for mixed car and home use.
At only 4.4 kg and 39.6 x 23.7 x 42.6 cm, it stays easy to carry thanks to its built-in handle. ECO mode reduces power draw once the set temperature is reached, an advantage for preserving a power bank's charge during nomadic use.
For light, occasional use, with the flexibility of a heating function alongside cooling, the WOLTU KUE010gr remains an affordable, versatile choice, without matching the cooling power of a compressor cooler for long-term storage in hot weather.
Technical data
Detailed characteristics
Performance
| Type?General technical category the unit belongs to (passive, thermoelectric, compressor...). | Peltier thermoelectric, no compressor or refrigerant gas |
|---|---|
| Temperature?Temperature range the unit can be set to. | Cools down to 18-22°C below ambient temperature, warms up to +65°C |
| Power consumption?Electrical power drawn by the unit while running, expressed in watts (W). | 48W |
| Noise level?Noise emitted by the unit, in decibels (dB(A)), mainly relevant for compressor coolers. | Under 49 dB |
Dimensions and power supply
| Capacity?Usable storage volume of the cooler, in litres. | 22 litres gross, 19 litres net |
|---|---|
| Power supply?How the unit is powered (12V, 230V, or none for a passive cooler). | 12V DC (cigarette lighter cable) and 230V AC (mains cable) |
| Weight?The unit's empty weight. | 4.4 kg |
| Outer dimensions?Width, depth and height of the unit (W x D x H), inside and/or outside depending on the line. | 39.6 x 23.7 x 42.6 cm (width x depth x height) |
| Inner dimensions?Width, depth and height of the unit (W x D x H), inside and/or outside depending on the line. | 35 x 18 x 35 cm |
| Material?Main material used to make the casing. | Polypropylene (PP) shell |
Additional information
| Certifications | CE, GS, RoHS, LFGB |
|---|---|
| Modes | ECO (energy saving) and MAX (performance) |
Comparison
In the compact thermoelectric electric cooler segment, around 20 to 25 litres, the WOLTU KUE010gr is naturally compared with the Dometic BordBar, another market reference, in searches such as "WOLTU vs Dometic BordBar electric cooler". Here's how the two compare, based on both manufacturers' public specifications.
| Criterion | WOLTU KUE010gr | Dometic BordBar |
|---|---|---|
| Capacity | 22 L (19 L net) | Varies by model |
| Heating function | Yes, up to 65°C | No |
| Power supply | 12V and 230V | Mainly 230V |
| Weight | 4.4 kg | Heavier |
| Price observed | ≈€70 | Higher positioning |
In short, the WOLTU KUE010gr stands out for its dual hot/cold function and dual 12V/230V power supply, at a notably more accessible price, while the Dometic BordBar relies on its manufacturer's established reputation. Both remain thermoelectric coolers, without the cooling power of a compressor model.
Our tester's verdict: Gilles Caron
I tested it over a camping weekend, switching from mains power before departure to the cigarette lighter socket during the drive, without needing a second unit. The heating function turned out handy for keeping a cooked dish warm until mealtime, a use I hadn't anticipated at first. On the cooling side, the temperature drop stays much more modest than a compressor cooler: expect a cool feel rather than genuine mechanical cold, enough for drinks and already-chilled items, but not for long-term storage in hot weather. ECO mode lets it run all evening on a small power bank without draining it too much. At just 4.4 kg, it's easy to carry in one hand thanks to its handle, a real advantage over much heavier compressor coolers. For light, occasional use between home and car, it remains a sensible, affordable choice.
Frequently asked questions: WOLTU KUE010gr, 22L thermoelectric cool box
The KUE010gr uses a Peltier thermoelectric module, lighter and quieter but with a more modest temperature drop (18 to 22°C below ambient), while a compressor cooler uses a genuine refrigeration circuit capable of dropping well below 0°C regardless of outside temperature.
Yes, by simply reversing the direction of the thermoelectric module, it can keep a dish at a temperature of up to 65°C, a function classic compressor coolers don't offer.
Yes, it comes with a 230V mains cable in addition to the 12V cigarette lighter cable, allowing standard domestic use, for example as a spare mini-bar or dish warmer.
No, with a claimed noise level under 49 dB, it stays discreet, an advantage specific to thermoelectric technology, which has no mechanical compressor.
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Page published on 3 August 2026