hey everyone, I have bought a car vacuum cleaner not to use in the car but in the dormitory room I'm living in, but I didn't notice it came with the car plug and, not the regular home DC plug, now that I thought of buying a home cord for it I couldn't figure out which adapter should I choose, in the picture you can see the parameters of the product, can anyone tell me which cord would suit this device. thank you.

 

What device is the specification in post#1 for?
Those specifications do not appear to apply to any sort of 12 volt car vacuum cleaner device.
What is the wattage rating of the car vacuum cleaner you want to power??
I see 150 watts on the label, that would suggest a power adapter able to deliver 13amps at 12 volts. You will not find one of those power supplies new for a low price. But at a resale shop you might.

 

Welcome to AAC.

To make your life simple, I would suggest something like this:

12V adapter with automotive accessory socket
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Or, better but more complicated, buy a DMM (Digital Multimeter) for just a few dollars and measure the voltage and polarity of the supplied cord when plugged into a car, then buy something with the (what appears to be) 5.5 x 2.1mm coaxial (barrel) connector that provides what you measured. This might be 12V with a positive center (the most likely case) or something else.

If it is the former, there will be many, many options. As far as current goes (either in this case or the "easy" one above), I feel safe in suggesting a 2A adapter if it is only used for charging. If it can be used to run the device, I can only guess, but I do think 3A would be enough.

 

What is missing is enough information about that "Car Vacuum Cleaner". The portion displayed states a battery voltage and a battery capacity, which imply that it is a battery operated device. But the wattage stated does not agree with the battery specifications.

As for the difference in voltages, that may be due to the evil trick of using the power cord as a voltage dropping resistor. Several years back I was given an automotive accessory light to fix because the cord would get hot. I discovered that the cord was made with steel wire of some sort, like a big resistor. It may be that the cord for the device is also a resistor cord. In that case, measuring the voltage with no current drawn will show very close to the supplied value, and be of no use at all.

So what we see here is a case of the TS providing much less information than we need to provide any useful correct information. The result is that no useful advice can be provided, except to return that product, because it will not provide the performance that the TS is wanting.

Consider that the 8.4 volts and the 2 amp hour battery would provide 16.8 watt-hours, which for a 150 watt motor will be about a tenth of an hour run time, around six minutes. Is that long enough to clean a dorm room???

 

What is missing is enough information about that "Car Vacuum Cleaner". The portion displayed states a battery voltage and a battery capacity, which imply that it is a battery operated device.

This portion of the table shows a charge voltage (which appears to be either 5V or 9V (fast charge), and the (extremely suspect) suction specification. So, it's about the vacuum.

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The 150W could be another exaggeration, this time of the power consumption of the motor. In any case, an empirical measurement of the car charging cord output answers the question about the requirements, and using a 12V adapter with accessory socket avoids it.

 

The spec reads as if this is a portable battery operated vacuum which can be charged via USB. Is there a USB port on it? If so that may be the simplest solution if you already have a USB cord.

 

It might also be a special USB cord with that coaxial connector on the other end.

 

The product parameters are for an adapter that was found. The adapter has a little 2-cells 2000mAh Lithium battery with a momentary 150W output. It is charged from USB 5V or 9V. RC model airplanes use a charger and battery like that.

The vacuum cleaner came with a "12V" plug from a car. Homes do not have a "regular DC plug". Homes use 120VAC or 230VAC.

 

The product parameters are for an adapter that was found. The adapter has a little 2-cells 2000mAh Lithium battery with a momentary 150W output. It is charged from USB 5V or 9V. RC model airplanes use a charger and battery like that.

The vacuum cleaner came with a "12V" plug from a car. Homes do not have a "regular DC plug". Homes use 120VAC or 230VAC.

This seems to be a misreading of the TS post. He doesn’t say he found an adapter. The fact there is a column labeled “Vauum degree” with a value in Pa, also points at this being about the vacuum.

 

I have bought a car vacuum cleaner not to use in the car but in the dormitory room I'm living in, but I didn't notice it came with the car plug

Have you tried reading the manual and/or contacting the manufacturer?

The image makes me think it's a battery-operated device. Is the cord supplied fused? Plug it into your cigarette lighter and measure the output voltage.