EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI Review

EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI Review

You walk out to your car to go to work in the morning and see your back tire is looking low. That can throw a crimp in your whole day. Do you really have time to stop at the gas station to fill it with air? Do you have quarters for the machine? Nobody needs this hassle, but you don't have to worry if you have a portable air compressor, such as the EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI.

With a portable air compressor, you can quickly hook it up, fill your tire, and be on your way. This machine comes in handy not only for those time-crunched mornings but also for emergencies when you are not near a gas station or other place where you can get air. Carry the compressor right in your trunk and just grab it when you need it. It is a no-hassle way to ensure you are never caught with low tire problems again.

If you are considering buying one, then you need to become familiar with what it is and how it works. Find out what features it should have and how to know you buy the right compressor.

What Is a Portable Air Compressor?

A portable air compressor is a type of air delivery device. Unlike the larger version, it usually does not have a tank but instead runs continuously to produce the air. Although, some models may have a small tank. They are lightweight and easy to carry and store. Manufacturers design them for small projects or specific uses.

For example, the purpose of the EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI is to inflate tires and other similar items. These portable compressors typically are meant for use periodically and for shorter periods at a time.

Common Specifications to Note

There is a range of specifications a portable air compressor may have, and understanding them can allow you to better choose which compressor will work for your needs. A compressor for inflating tires is generally simple in design, so there are two main points to consider: power source and horsepower.

Power Source

air compressor pump

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You generally have two power options: AC and DC. Power Equipment Direct explains portable air compressors usually have DC power. This makes them capable of running on battery power. For an air compressor like the EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI, this battery power comes from your vehicle. This allows you to hook the compressor to your vehicle through the DC connector in your car. A 12-volt option is generally sufficient for inflating tires.


Horsepower is the measure of the output of the compressor. You will see this listed as PSI. The higher this number is, the more power it has. However, you do not need extensive power to inflate a tire. The 100 PSI of the EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI is probably sufficient for most vehicles.

How to Choose an Air Compressor

air compressor

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There are many considerations you need to make when choosing the right portable air compressor. Finding the right one is in the details. Some things the manufacturer may list in the products specifications. Others you may need to do some digging into customer reviews to discover. Regardless, the following are all points to keep in mind when you choose your portable air compressor.


PumpYourTires.com suggests always considering portability because this will have a huge effect on the overall usability of the unit. It should be easy to carry and should fit comfortably in your vehicle. You don't want a compressor that will take up too much room in your trunk, making it hard to carry other items. That isn't convenient, and any portable unit should be convenient. You should also consider weight along with size. You want to be able to carry it easily.


epauto air compressor

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While portable air compressors usually work a little slower than their larger counterparts, they should still work efficiently and not leave you standing there waiting for a long time to add a little air to your tire. Keep in mind that inflation times differ depending on the size of the tire, so make sure you note tire sizes when looking over specifications.

Duty Cycle

The duty cycle is how much time the compressor can run before it needs to cool down. This is important because it kind of goes in hand with speed. If the compressor takes a while to fill your tire, you may have to stop during the process to allow the machine to cool down. Most compressors, such as the EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI, will only be able to run so long before it starts to get too hot and needs a cool-down period.

Tire size

If you drive a car or other vehicle with small tires, then you can probably use just about any type of portable air compressor. However, if you have larger tires, you need to make sure the compressor you choose is capable of handling your tire size.



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There are many options in controls on air compressors. The best ones will provide a digital readout, which is easier to read than the standard readouts. In addition, look for extra features, such as an auto shut off where you can program the PSI, and the device turns off once it reaches that set point.

Other Details

You also want to look at other details that will help to make the compressor easier to use. For example, always check the cord storage. Ideally, you want a cord wrap that will hold the cord when the unit is not in use. This helps keep it tidy but also prolongs the life of the cord. Another consideration is the accessories. This includes different nozzles, which allow the unit to be more versatile. If you have other nozzles, you could inflate, for example, pool toys or basketballs. Finally, you should always look into how loud it is when running.

How to Use a Portable Compressor to Inflate Tires

Using a portable air compressor is fairly easy. Before you start, make sure the unit is off. Each device may have different instructions, but in general, the steps are to first connect the valve on the unit to your tire valve stem. Make sure you do not lose the cap after you remove it from your tire valve. Then, you should plug the unit into the DC connector in your vehicle. Some vehicles may not power the connector unless your vehicle is on, so check to see if you have power and turn on your vehicle if needed.

Now, you can set the machine to the correct PSI and turn it on. Depending on the functions of the compressor, you may have to watch the gauge and turn it off when it reaches the correct PSI, or the unit will turn off on its own. Once complete, remove the valve, turn off the unit, and unplug it from the power.

EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI

EPAUTO 12V DC Auto Portable Air Compressor Pump w/Digital Tire Inflator 100 PSI and Preset Pressure Shut Off Gauge for Compact/Midsize Sedan SUV
  • CONVENIENCE: Plug directly into Cigarette Lighter Socket. 12V-DC Tire Inflator for Occasional Use Only
  • MULTIPLE USES: Inflate tires on cars, bikes, compact / midsize Sedan SUV. Adaptors for balls and inflatables included for sport equipments
  • EASY TO READ: 3 Display Units: PSI, KPA, BAR
  • LED FLASHLIGHT: Bright Torch, Emergency Flashing, Red Warning
  • PREVENT OVER INFLATION: Auto shut off when reaching the desired tire pressure.

The EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI works using the DC connector in your vehicle, more commonly called the cigarette lighter. It is 12 volts and does not support 24 volts. The maximum PSI is 100. The compressor works in temperatures ranging from 14 degrees Fahrenheit to 140 degrees Fahrenheit. Do note this will not work for larger truck tires.

This air compressor has some nice features that make it easy to use. It has a power cord that is 10 feet long. This should make it easy to use on any tire. Plus, the air hose is 20 inches long, which also helps with reaching your tire valve. It also includes adaptor valves to allow you to inflate sports equipment and other inflatables. The digital display allows you to check or set the PSI quickly, and the device will enable you to set the PSI and will turn off when automatically reaching the desired point. Also, the display shows in three units: BAR, KPA, and PSI. Inflation is quick, with the unit taking only five minutes to inflate a tire to 30 PSI from flat. Finally, the unit has three LED flashlight options. You can choose from a red warning light, flashing light, or bright torch.

Customer reviews

Customers have many good things to say about the EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI. They comment on how it ranks higher than similar units because it has an overheat control to stop it from getting too hot. They love the digital display, which makes it very easy to use. The light options are great for safety according to a few customers who felt they made this device easier to use in the dark and when on the roadside. Many customers remark the auto shutoff makes this unit stand out and makes it very convenient to use. Besides, they like that it is lightweight and compact for a great fit in a trunk. Many customers state the unit is very accurate and reliable as well.

There were a few customers who had power issues with the units they bought. However, the manufacturer recognized the quality control problem and easily remedied the situation for those impacted. Customers also warn this is not a heavy-duty unit, so it is best for emergencies or occasional use. The only other issue brought up by consumers is the attachments, which store nested together. If you lose one, they will not store properly. The overall rating on Amazon for the EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI is 4.2 out of 5 stars.

Comparing the EPAuto Compressor to Other Compressors

When buying a portable air compressor, it helps to compare several different models. This gives you a chance to discover what features you really like and choose the one that best suits your needs. To help you comparison shop, we reviewed three models from competing brands below.

How we reviewed

Before we get to the reviews, let us take a moment to explain how we do our reviews. We take the time to research each model carefully. Through the manufacturer's website and customer reviews, we put together a look at each product. While we understand that customer reviews may contain bias, we make sure to weed that out by looking at the overall opinions and not just one or two experiences. That provides you with an accurate and unbiased viewpoint on each product.

Ontel Air Hawk Pro Automatic Cordless Tire Inflator

Ontel Air Hawk Pro Automatic Cordless Tire Inflator Portable Air Compressor, Easy to Read Digital Pressure Gauge, Built In LED Light, Black
  • Automatic Cordless Tire Inflator
  • Digital LED Tire Gauge
  • Inflates in 90 Seconds or Less!
  • Automatically Shuts Off When Inflated
  • Built-in LED Light

This portable air compressor from Ontel has one obvious perk over the EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI. It is cordless and runs off a rechargeable battery powered with an AC charger. Like the EPAuto compressor, it has a digital display and auto shutoff feature. It also comes with extra valves for inflating items other than tires, and it has a carrying bag. 

This unit gets a rating of 3.7 out of 5 stars. Consumers say it is lightweight and easy to use, but they also have many issues with this compressor. They remark that it does not hold power long and needs recharging about every 15 minutes. It also is slow to inflate and very loud when in operation. They also do not care for the flimsy carrying bag and say the digital readout is not very accurate. Finally, the valve attachment is plastic, which many users said wears out too quickly, rendering the unit unusable for inflating tires.

Tcisa 12V DC Portable Air Compressor Pump

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The Tcisa air compressor offers some more power than the EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI with a 150 PSI rating. It claims to inflate a flat tire in as little as two minutes to 30 PSI. As with the EPAuto compressor, it has auto shutoff and a digital display, along with a flashlight. This unit also comes with adapters for filling sports equipment and inflatables.

Consumers do give this a rating of 4.6 out of 5 stars. They say the gauge is very easy to read and the unit is easy to use overall. Consumers remark on the lightweight and its portability. It also is quiet and works fast to inflate a tire. The only major issue was some consumers say it blew fuses in their cars so it would not work for them.

Ryobi P737 18-Volt ONE+ Portable Cordless Power Inflator for Tires

RYOBI P737 18-Volt ONE+ Portable Cordless Power Inflator for Tires (Battery Not Included, Power Tool Only)
  • ONE+ COMPATIBLE! This tool runs on the power sources used in Ryobi’s ONE+ battery system, making this purchase extra smart for the Ryobi veteran
  • PORTABLE PISTOL PUMPING POWER: Ryobi’s P737 is smaller than most inflators, boasting an ergonomic pistol grip handle for easy use and transport. Keep it in the back of your truck! Strap it to your bicycle!
  • SAVE MONEY AND TIME spent on purchasing extra accessories for other portable inflators. The Ryobi P737 boasts TWO high-pressure nozzles, a sports equipment needle, and an ONBOARD PRESSURE GAUGE
  • SPECS: 20” hose, 2” pressure gauge, 0-150 PSI, 18V, 2.5lb, cordless operation
  • STORAGE: a compartment at the base of the tool holds all bits and nozzles for your convenience

This Ryobi air compressor is a little different from the EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI. It is a handheld unit that you have to hold the trigger to insert air into your tire. The unit comes with a needle for sports equipment and offers storage in the base for the nozzles. It is cordless and runs on a rechargeable battery. 

Consumers rate this a 4.3 out of 5 stars. They like that it is easy to use, but many think it is inconvenient to have to hold the trigger and that it is too slow. They also said the power level is not great and makes it tough to inflate a tire properly. There were also reports of quality issues with the hose breaking after a couple uses. However, many consumers did like that it is lightweight and and that it does not get hot during use.

EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI Pros and Cons

With any product you want to buy, you need to take a look at the overall pros and cons. This can help to make your final buying decision much easier. It also gives you a chance to discover anything you may not like about the product, while also letting you see points that make it stand out above other options. Here is a look at the pros and cons we found on the EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI.


In general, this is a very easy-to-use air compressor. It is built well and with the user in mind, providing a simple control panel and a digital display that is a snap to read. It provides accurate readings and lets you program it to stop when it reaches your desired PSI. It also is a great size for a portable unit and sold at a decent price. It provides all the main components you need in an efficient portable air compressor.


The EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI does have a few things that are not so good. It does require plugging the unit in for power, but for some people, this is preferable since battery-operated units usually have limited use time. This unit does have some quality control issues in past production, which does mean future issues are possible, but the customer service from the company is outstanding according to consumers. The main problems include that it is not heavy duty, so you cannot run it for long periods or use it too much without causing trouble and that the screw on valve allows for air to escape, which means you have to add more air than you really need to get your tires at the proper PSI.

Wrapping It Up

The EPAuto 12V DC Portable Air Compressor Pump, Digital Tire Inflator by 100 PSI rates well with 4.2 out of 5 stars. Most consumers are thrilled with their purchase and find this is a very usable unit. The power and ability seem to compare nicely to similar portable air compressors as well. Overall, it seems to be a solid choice if you want a portable air compressor to carry in your vehicle for those times when your tires are running low on air, and you don't feel like traipsing to the gas station.

Last update on 2021-10-19 at 04:29 / Affiliate links / Images from Amazon Product Advertising API


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