# You asked: How long will a 12 volt fan run on a car battery?

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## How long will a car battery power a 12v fan?

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. If you have a typical single battery that came with the camper it is more than likely about 80-90 AH, of which 40-45 AH is usable before you need to re-charge the battery.

## How many watts does a 12v car fan use?

For instance, a 12v fan that has a 0.25A current will draw 3 watts of power.

## How long can a car battery run a house 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 run a PC fan on a car battery?

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

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## How many amp hours does a fan use?

The majority of modern ceiling fans use less than an amp, averaging between 0.5 and 1 amp, depending on the model and the setting. One amp drawn by a ceiling fan is equivalent to about 120 watts. Low settings use less amperage while higher settings use more.

## Is there a fan that runs on batteries?

Geek Aire Fan, Battery Operated Floor Fan, Rechargeable Powered High Velocity Portable Fan with Metal Blade, Built-in Durable Battery Run for Whole Day Time, for Camping Travel Hurricane, 12 Inch.

## Is 12 volts a lot of electricity?

Most low voltage lighting runs at 12 volts so unless you’re running it from a battery (e.g in your car) there has to be a transformer to reduce the mains electricity supply from 230 volts to 12 volts.

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

These powerful electric fans work with 12-volt electrical systems and draw 6 to 10 amps, depending on the size.

## How much electricity does a fan use per hour?

How much electricity does a fan use? They all use different wattage, but the most common is the ceiling fan and it uses 15 to 90 watts per hour. While an HVAC uses 500 to 1400 watts per hour or 3000 to 5000 watts per day, depending on how long it runs. The fans can be big savings on your electric bill!

## How long can a power bank power a fan?

The claimed power consumption is 250mAh. Assuming 85% power bank efficiency at the fan’s rated power draw this should run about 68 hours on that power bank.

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## How long do fans stay on?

You can leave a fan running continuously for eight hours, on average, without worrying about unexpected ceiling damage or fires in your home.

## How many amps does a 12 volt battery have?

Even though most car batteries are only 6 or 12 volts, a 12-volt battery can produce as much as 600 amps. Amperage can be thought of as the volume of electricity that’s generated, but voltage can be thought of as the “pressure” of the electricity.

## Can a computer 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.

## How long will a computer fan run on a 9V battery?

It will probably run at about 3/4 the speed and draw about 3/4 the current (rough estimate) so around 100mA. Looking at a typical datasheet for an alkaline 9V battery, we can see the capacity will be perhaps 350mAh (down to 4.8V) so it might work for 3-5 hours, as the current will drop as the battery discharges.