Number of chambers
The presence in the refrigerator of separate zones for storing products, separated by a stationary dense wall of a non-removable structure. The vast majority of car refrigerators have a
single-chamber layout, however, there are also
two-chamber models, which is extremely convenient for sorting products.
Max. cooling at
This parameter determines how many degrees the refrigerator is able to cool the product loaded into it relative to the ambient temperature. Let's say the maximum cooling for a particular refrigerator model is 20°C; at an air temperature of +30°C, a product with the same temperature is loaded into it. Thus, the final temperature of the product will be 30 – 20 = +10 °C. In addition, it should be noted that the final temperature cannot be lower than the minimum cooling temperature (see Minimum cooling temperature)
Сooling energy consumption
The power consumed by the refrigerator when operating in cooling mode. The greater this power, the more performant the refrigerator is, usually, and the less time it takes to cool the product. On the other hand, note that more power means more power consumption — which can be critical, for example, during long-term operation from a car battery (that is, when the car engine is turned off).
Heating energy consumption
The power consumed by the refrigerator when operating in heating mode. As with cooling, more power usually means more performance; see "'Сooling energy consumption" for details.
Supply voltage
The supply voltage for which the car refrigerator is designed. There are several standard options:
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12 V Standard voltage of the on-board mains of passenger cars, as well as many minibuses and light trucks. Supported by most modern car refrigerators.
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24 V Standard voltage of the on-board mains of buses, heavy trucks and other large equipment; also found in some SUVs. Car refrigerators "only for 24 V" are almost never produced; as a rule, this option is provided in addition to 12 V.
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230 V Powered by a standard household outlet. Usually a backup option, in case the refrigerator needs to be turned on outside the car for a while — for example, to pre-cool before a trip. In addition, units with such power can be used as an improvised replacement for a stationary refrigerator — for example, when going to the country, where there is no permanent refrigerator.
