The two Harbor Freight stores local to me have the 100psi pump that was in the video, in stock.
My ViAir 88P is a little more money than your price limit, but it is a fast pumping workhorse. It’s head and shoulders above any pump I’d previously had, and I carry it in the back of the SUV 24/7/365. Bought it 4 years ago, added an extra length of hose so I can reach the trailer tires, and it’s been rock solid dependable. My DS (a mechanical engineer) was impressed by it when I bailed him out of a flat tire one time, so I bought him one as a gift, too.
You’re welcome, Jonathan.
I bought a rather inexpensive 12v corded pump around 1999. I think it was something like $19, from Pep Boys. That thing was a champ. It was LOUD, but it worked. I’d lost attached feet on it a few times and had to glue on replacements. The original label fell off so I’ve no clue of the brand (not stamped anywhere). It got very gouged and scratched over time, but it kept pumping. About 10 PSI would take about 8~10 mins for a car tire (faster for a bicycle tire). And yeah, it could get hot. The only thing that failed is the clamp socket. It just won’t hold any longer. And I figured it was time to upgrade. NONE of these small pumps are designed to inflate a car tire from flat in one shot. But, in stages, it can be done. They’re really meant for topping off. Sometimes you end up with a slow leak tire. Or wild temperature swings that can cause air to compress and lose pressure. These are ideal for that, instead of paying $1~$2 for 2 minutes of air at the gas station air pump.
I would not go with battery only for emergency car use. That’s why I like this other one I got, with dual power sources. I plan to run it through its paces this weekend and see how it fares. But so far I’m liking it over the first portable one I’d bought (and then returned).
Incidentally, Amazon is showing a $10 off coupon that you click on in the detail page before adding to cart, so it can be had for $29.99 shipped in USA (that’s $6 cheaper than when I bought it).
Hilarious. I think that’s the one I bought at Pep Boys too. “Red Devil.” Long discontinued (Pep Boys deals with “Slime” brand pumps now). Yep, sounded like a 2 stroke motorcycle engine. I remember nearly burning my fingers on the braided hose metal ring. I thought it was close to $20. Mine still runs—just can’t keep it clamped on the valve any longer. If I could crimp on a replacement hose with a screw end, that would do the trick… but for the parts price & hassle… likely not worth it.
Actually I like the Ryobi one also, this one:
https://www.amazon.com/Function-Inflator-P747-Non-Retail-Packaging/dp/B081GBXWYT
…although I actually got mine at Home Depot on sale for a similar price. I have an entire ONE+ series of tools so I just move batteries around. It does screw on as someone mentioned further up.
Whatever you do, don’t bother with this one:
https://www.amazon.com/Ryobi-P737-Portable-Cordless-Inflator/dp/B017JIWT9U
it works, but it’s slow and gets hot as a mofo.
That does look like a pretty solid and well designed pump. I’ll keep that in mind if the present one I just got doesn’t work out—Thanks.
If it’s the one that had 2 “legs” that would slide out from tucked-in to straight-out, that’s probably the one.
Damned thing would vibrate so hard it’d “walk” around the tire if you’d let it off its leash.
I’m pretty sure I got mine for 10bux as I even debated back then whether/not I should get more.
Might’ve already been discontinued or just on a slash-sale or whatever. Been forever.
Ahh… Yes, In the time of fuel injection…
The pump had a lower intake pressure than the cylinder so it pulled in outside air in from a series of openings on the pump.
In the time before all the cheap electric pumps, this, some fix a flat cans, and one of those tire plug kits saved me some grief.
I had a spare tire, but if I had the time and ability to patch the main tire - I always did that.
I often used to camp alone off in the wild yonder. Always kept a good set of tools and spares.
All the Best,
Jeff
I actually have one of those slow leaks at one car tire. It’s a 1-1/2 week kinda slow leak. 
I also have one of the E-Scooter tires that I need to pump up every week or so. I already patched it twice now. Anyways, a 12v compressor is using maybe 0.5A so it’s not gonna go super fast. Therefore I can live with the fact that it takes a little longer.
Another air pump tested, purchased with a Vipon coupon for $22
https://www.amazon.com/gp/product/B08ZN9KJ92/
I aired up two tires from 32psi to 40 psi. This resulted in a pressure of 38 psi.
Pros
small, compact
the clamp on air hose works well
The buttons have good click feedback.
The unit has auto shut off at a set pressure
The unit displays accurate tire pressure when the pump is stopped.
The PSI indication is accurate when the unit is off.
Cons
Air line is very short, I had to hold the pump in my hand to keep it from rattling against the wheel.
There is no battery level indicator.
The unit will not stand up on its own, there is no flat bottom.
The buttons are black and the markings on them are hard to see.
Seems a bit louder than the previous pump I tested.
No option to power the unit from the car lighter socket.
Though indicated PSI is accurate when off, the unit undershoots the shutoff pressure by 2psi.
defect:
One of the LED numeric indicators does not light up, so a 9 looks like a 7.
Conclusion.
works well for topping off a few psi and to make the tire pressures equal on all four wheels.
I am returning the unit because
- there is no battery level indicator,
- will not stand on its own, the design is intended to be handheld while pumping.
- not dual power, battery only, no car lighter socket option.
- a defective display LED
I agree Viair makes great pumps. I have the 300P model. It is big, heavy, powerful, and I have to run the motor of the car to use it.
It was for use when I had a 4WD vehicle with 31” tires, that went offroad and after offroading, needed to air up each tire by 20psi.
For me, these small, inexpensive pumps with Internal Battery, are meant to replace my Viair, so I have the Option Not to run the car motor to air up a tire. This is for a Subaru Car, not an offroad 4WD vehicle. At most it would be used to air up each tire by 10psi.
That is still a tall order, and may create enough heat in the pump, that it will thermal shut down before the total of 40psi is delivered. Will report back when the pump I just ordered arrives. I chose the one xevious says works both on battery and on cig lighter socket if needed:
https://www.amazon.com/gp/product/B08XW3PT8T
.
OK, my update on this pump:
JOY!
It works well! And reasonably fast. My “50% louder” claim above was exaggerated. It’s really only slightly louder than the previous pump. I deflated one tire to 10 psi low, then refilled it. Did it in just about 90 seconds. Pump body was barely warm, and the air hose only moderately warm. Color me pleasantly surprised.
I double-checked the PSI detection compared to my SLIME air gauge. Reading is only 0.1 ~ 0.2 PSI over actual, compared to the 0.7 ~ 1.5 PSI over actual discrepancy of the previous pump.
So it’s fast, not too loud, and VERY stable. Does not jump around. Plus, the LED light is reasonably bright (not enough for a walk, but good enough to illuminate for an inflation or tire change task.
No, there’s no “car, bicycle, basketball” mode, but changing the PSI setting is quick & easy. Definitely not returning this pump. I think I’m done for now. 
Yay!
Thanks for you detailed feedback.
I dont mind specifying the inflation target, dont need a preset for basketballs, bikes, and cars.
I have the same pump ordered.
when you pumped for 90 seconds, how many total PSI did that deliver. (I dont know what your target PSI is for your tires…)
You’re welcome. I mentioned that I lowered my tire to 10 psi below its normal pressure, so that was the amount I inflated in about 90 seconds. But I’ve tested it again just to be sure, timed it with a stopwatch. My car tire pressure went from 26 PSI to 36 PSI in exactly 100 seconds. Body of pump barely got warm. Braided hose was fairly warm. Nothing hot.
excellent data
when my unit arrives I will do that test Four Times in a row, as that would be my actual intended use case scenario.
If the new pump can handle that task, it will let me reduce Cargo by removing the much larger and heavier Viair kit, that includes a loooong airhose, plus battery clamp wiring, and requires running the motor.
the new tech battery powered pumps have auto shut off… thats a big plus
not having to run the car motor is also a big plus for me
There is a $10 off coupon right now, so $29.99.
^ It’s a very good value considering what else is out there and respective pricing.
Yeah, for my previous corded air pump, I’d have to use a 12V socket in the armrest console, hit front/back of one side, then pass the pump through the cabin to the other side to do the other two. VERY nice not having to deal with a cord, and… if by some chance the battery is low, the 12V power cord is a fantastic backup. The other thing is, the backlit LCD is so very visible in any light. Frankly, the engineer who designed the previous air pump we tried (silver cylindrical shape with LED display) should’ve suffered a reduction in pay for that hugely glaring mistake. Obviously no one did any real world testing of the pump before putting into full production.
I just got the same pump and tested it
dropped a tire by 15 psi and pumped it back up. Did not time it.
My handheld tire pressure gauge said the tire was at 40psi and I dropped it to 25psi… the airpump said that was 18psi.
I then set the pump to stop at 36psi, it stopped at 36.5, and that measured 43psi on my tire gauge… the gauge on the tire inflator reads low by 7psi…
—
likes
the pump is rather quiet
the hose is long enough to easily reach the tire valve
the unit stands stable on the ground
the auto stop works great
love the battery operated feature, super convenient not to run power cords and not to run the motor.
there is a lighter cord coiled into the bottom of the unit and the hose also fits in that gap… convenient storage.
—
room for improvement:
the pressure gauge in the unit reads 7 psi low
the hose got hot after 15psi, and battery dropped to 1bar
—
When I did the test I had not fully charged the battery, though it was at 4 bars.
Immediately after the test it had dropped to 1 bar and a few minutes later it had rebounded to 2 bars.
Although I has originally considered doing a total of 40psi inflation test, I did not contiue the test after 15psi, to avoid overheating and overdischarge… I waited 1 hour for the unit to cool down, then plugged in to charge
Im not sure it is realistic to expect this little pump to put out a total of 40psi, without a recharge or at least a cooling break.
I like it and want to keep it, just for the convenience of adjusting my tires by 5psi, if not 10.
Am wondering if I should ask for a replacement with a more accurate PSI gauge?
@xevious is your tire pump PSI meter reasonably accurate?
Please note that you need to fully charge the battery fully before using.
I think there may be a “recalibration” necessary for the charge indicator by fully charging. When I got mine it was showing 3 bars. It took 8 hours to achieve the 4th bar. The whole pump shouldn’t take more than 10 hours to charge from depleted. In any case, I used my pump a few times now. Still showing 4 bars.
As for accuracy, mine tends to show 1 ~ 2 PSI above actual. It does this pretty consistently. So when I pump, I just add a couple PSI for good measure. I normally do this anyway with other pumps as I know detaching and manually checking air levels can lose about 1 PSI.
I would be unhappy with a full 7 PSI off. That’s too much. I’d see about a replacement. You might want to try your luck at ordering a 2nd one, then if it’s more accurate, just return the previous one.
Just an alternative… If you’re primarily topping off tires on sedans or motorcycles, a high quality bicycle pump is pretty quick and doesn’t have much to break.
I’m not talking about the Wmt special pump, I’m talking about the large, relatively expensive pumps by specialty brands that are meant to put high pressure into those road race bikes. I had two (can’t find one after moving twice), and the one I didn’t misplace is still going strong after 20 some years. If I remember tomorrow I’ll check the brand name of the one I still have/use.
I don’t recommend them for truck tires, but for tires on sedans it takes me about 10 pumps for 1 psi. when I’m going from 27 to 33 psi. Even quicker on motorcycle tires.
I did try one that I bought at Wmt (I think it was a Schwinn), and I gave it away after trying it on one tire it was so bad.
That reminds me… I do have a mini bicycle tire pump stashed in my spare wheel well. It’s just in case my main pump is missing or non-functional. Can do the job while also providing good exercise.