Rank #3 in Best Electric Cool Box 2026: 10 Ranked, and Why the Litre Count Misleads
Crystals 26L Electric Cool Box, 12V DC & 240V AC
Price and rating as shown on Amazon when we collected them. Both change.
Third in our guide to electric cool boxes, the Crystals 26L is a thermoelectric box that runs from a 12V car socket or a 240V mains cable and costs £47.97. Its own spec table cannot settle on how much it holds: the title, the Size field and the Refrigerator Net Capacity field all say 26 litres, while the same table also lists a Freezer Capacity of 24 litres — on a box it simultaneously describes as "Freezerless" in the Configuration field. That is the pattern we flagged in the guide: the litre figure on these listings describes the box, not a measured usable space.
The rest of the listing is more concrete. Crystals claims it heats to 65°C or cools to 15°C below the surrounding air temperature, which is a relative figure rather than a set temperature — yet the same table answers "Yes" to Adjustable Temperature Control. At 12V it is rated at 40W cooling and 46W heating, and the stated dimensions are 43cm high, 40cm wide and 30cm deep, which works out at 51.6 litres of outside box for the 26 litres claimed inside. It holds 4.5 out of 5 from 204 Amazon ratings. Everything on this page comes from the Amazon listing as written — we have not tested the box ourselves.
How those 204 ratings break down
An average hides its own shape. This is the spread behind the 4.5 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £47.97 |
|---|---|
| Amazon rating | 4.5 out of 5, from 204 ratings |
| Claimed capacity | 26 litres — stated in the title, the Size field and the Refrigerator Net Capacity field |
| Freezer Capacity (as listed) | 24 litres — on a box the same table lists as Freezerless |
| Cooling and heating | Thermoelectric: heats to 65°C, cools to 15°C below the air temperature |
| Power | 12V DC (40W cooling, 46W heating) and 240V AC |
| Dimensions | 30cm deep x 40cm wide x 43cm high |
| Door Orientation (as listed) | bottom |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“Decent bit of kit... mainly used for work pack up box and 2 ,1.5ltr bottles of juice. I use two small ice blocks and find everything perfectly cool especially the drinks over a ten hour day. Very quiet just a gentle hum on the seat next to me... highly recommend”
Verified purchase“Brilliant cool box. Keeps everything cool when plugged in the car as the description said. Supplied with 12v cable that is long enough to keep the box in the rear footwell 10/10”
What it is up against
The rivals it was ranked against in Best Electric Cool Box 2026: 10 Ranked, and Why the Litre Count Misleads.
Questions people ask
How much does the Crystals 26L cool box hold?
The title, the Size field and the Refrigerator Net Capacity field all say 26 litres, and Crystals says that is enough to stand 1.5-litre bottles upright. The same spec table also lists a Freezer Capacity of 24 litres.
How do I power it?
Two ways, according to Crystals: a 12V DC cable for cars, caravans and boats, and a 240V AC cable for home or the office. One Amazon reviewer said they had only tried it on 240V so far.
How cold does it get?
Crystals describes it as thermoelectric, cooling to 15°C below the air temperature and heating to 65°C. Both figures are relative, so there is no single temperature the box holds on its own.
How much power does it use at 12V?
The listing gives 40W for cooling and 46W for heating at 12V.
What are the outside dimensions?
43cm high, 40cm wide and 30cm deep, as listed by Crystals.
What do buyers say about it?
It scores 4.5 out of 5 from 204 Amazon ratings. One reviewer used two ice blocks alongside it across a ten-hour working day and found drinks stayed perfectly cool, and another said it kept everything cool in the car on the supplied 12V cable.
Comments
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