# Can you run a PC fan on a car battery?

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## How long will a car battery run a PC fan?

Your 30 watt fan will draw about 2.5 amps at 12 volts (2.5 times 12 is 30). Assuming 90% efficiency from the inverter means that the inverter will draw 2.5/. 9, or 2.78 amps. A 50 Ahr battery will last 50/2.78 or 18 hours.

## Can you power a PC fan with a battery?

Computer fans can be hooked up to a battery if the battery is of the correct voltage. Computer fans vary in size and voltage requirements. Some fans, such as the tower cooling fans, operate at 12 volts while Central Processing Unit (CPU) fans may operate at seven volts.

## Can you hook a fan up to a car battery?

It is entirely possible to operate a fan and some other household plug-in appliances by powering them off a car battery, but it takes some special equipment, as well as some understanding of electrical systems.

## Can a PC fan run on 12v?

Yes red and black 12v would give you full speed. You could use a potentiometer to vary the voltage to it and slow it down.

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## How long can a 12-volt battery run a fan?

A typical 12v RV fan will draw between 400-500 ma. So you can plug it into a cig type outlet, most 12v RV fans already come with that type plug. If you use the upper 500ma (1/2 amp) draw for your calculation, the fan will use 1 AH (amp hour) of power every 2 hours.

## How many amps does a 12-volt fan use?

This 12-volt fan puts out 8 watts of electricity. Using our Volts x Amps = Watts equation, we can determine that the fan used 0.6 amps.

## How long will a 9V battery power a computer fan?

An alkaline 9V battery has a capacity of about 560 milliamp-hours. A fan drawing 50 milliamps will therefore run for some 11 hours.

## Can a 12V fan run on 5V?

No, as long as you connect it properly, you’ll be fine. Check the amperage rating on your fan. Most will be ~0.25A or similar. This is at 12V, so at 5V it’ll be using less than half that.

## Can a power bank run a fan?

Yes! I have a power bank of 8,000 mAh and it runs all night using less than half the power. 8 of 8 found this helpful.

## How do you power a 12V DC fan?

To power a DC fan, we feed the fan its rated voltage. For example, to power a 12VDC fan, we need to feed it 12 volts DC. This power can come from any DC voltage source, such as a DC power supply or even batteries. If using batteries, in order to get 12V output, you would have to place 8 ‘AA’ batteries in series.

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## How much power does a USB desk fan use?

【UlTRA-QUITE & ENERGY SAVING】① The high performance USB desk fan brushless motor provides maximum airflow with minimal noise. ② The highly efficient motor consumes only 2.5 watts per hour on the highest setting.

Electric fan design Table Fan
Style A: 6″ Bronzer USB fan

## Why does a 12v fan have 3 wires?

The third wire gives your computer control over it. The speed of the fan is reported back to the computer’s processor, which can be used to control the fan’s speed by raising it or lowering it when necessary.