ONE+ 18V Lithium-Ion Cordless High Pressure Inflator with Digital Gauge $20

you can grab all the most insightful comments from the last time and reuse them here:
https://slickdeals.net/f/15424561-ryobi-one-18v-lithium-ion-cordless-high-pressure-inflator-with-digital-gauge-tool-only-p737d-19-97

good deal. I got it previously and it has been helpful. Used it just last week to pump up a completely flat tire to bring the car to costco for all 4 new tires. Good to have if you are already on ryobi system

It's been $20 for a while now

Quote from jdubz1 : It's been $20 for a while now

i haven't been following it, as i have one - but it does come up often.

Bought one last week, has a 5 min on / 5 min off limitation for overheating and use; not sure how long it takes to inflate a flat car tire, but topping off 4 about 6psi seemed to be a couple minutes long of "run" time. The noise isn't too bad, not quiet but not obnoxious either. The plastic clip to clamp onto the valve stem feels flimsy, @ $20 for the whole unit I wasn't expecting much but I expect that part will fail before anything else.

The Digital PSI gauge is clear and easy to read but didn't align with my trusted analog gauge or the PSI readings from the car dash, was off by 1 PSI (Ryobi was 1PSI higher reading than actual). Might be closer to .5 PSI as you have to flip the lever and pull off the stem lose a little air in the process. And the gauge is .5 PSI increments. If the lever was more firm / quality might be easier to remove without losing as much air too. Anyway, just fill a little higher and then remove.

this is always this price.

I see for these kinds of things they benchmark the ability to fill a tire in X minutes to Y PSI based on their 4.x Ah battery pack.

But what I'm wondering is if one buys the 1.5 or 2.x Ah capacity battery pack and the battery is reasonably close fully charged how much use can one get out of this kind of unit? Will it inflate a typical passenger car tire fully from 0-30 or 35 PSI in a reasonable time using a 1.5 or 2 Ah battery?

Buying the low end or medium range battery would be more tempting for a "just leave it all in the car" sort of tool than a relatively expensive high end pack which then becomes not so conveniently available to use for other purposes and which might degrade due to the humidity / heat etc. in the car.

Quote from minhtin : good deal. I got it previously and it has been helpful. Used it just last week to pump up a completely flat tire to bring the car to costco for all 4 new tires. Good to have if you are already on ryobi system

damn, i have makita stuff. it's so much more expensive though.

Quote from QuixoticOne : I see for these kinds of things they benchmark the ability to fill a tire in X minutes to Y PSI based on their 4.x Ah battery pack. But what I'm wondering is if one buys the 1.5 or 2.x Ah capacity battery pack and the battery is reasonably close fully charged how much use can one get out of this kind of unit? Will it inflate a typical passenger car tire fully from 0-30 or 35 PSI in a reasonable time using a 1.5 or 2 Ah battery? Buying the low end or medium range battery would be more tempting for a "just leave it all in the car" sort of tool than a relatively expensive high end pack which then becomes not so conveniently available to use for other purposes and which might degrade due to the humidity / heat etc. in the car.

I used mine with the 1.5 battery (fully charged) to add 10 PSI to each of my four 235x60x17 tires in 35 degree F no problem, used a little less than 3 volts of battery charge, not sure yet percentage wise how much of total capacity that is. I didn't have a watch or phone with me so I timed by counting, each tire took a count to about 110 for the 10 PSI.

Quote from QuixoticOne : I see for these kinds of things they benchmark the ability to fill a tire in X minutes to Y PSI based on their 4.x Ah battery pack. But what I'm wondering is if one buys the 1.5 or 2.x Ah capacity battery pack and the battery is reasonably close fully charged how much use can one get out of this kind of unit? Will it inflate a typical passenger car tire fully from 0-30 or 35 PSI in a reasonable time using a 1.5 or 2 Ah battery? Buying the low end or medium range battery would be more tempting for a "just leave it all in the car" sort of tool than a relatively expensive high end pack which then becomes not so conveniently available to use for other purposes and which might degrade due to the humidity / heat etc. in the car.

I don't own the digital version, mine is the older analog gauge model; so take what I say with a grain of salt and weight it accordingly

I normally use mine with a 2Ah battery. I don't normally use it for a 0-X refill, it really shines for "topping up" a tire or multiple tires. You can use it to refill a tire, maybe even two with a 2Ah, three or four with a 4Ah. Topping up tires, you definitely can do several with just a 2Ah battery.

But at the point of refilling multiple tires you're going to start running up against duty cycle issues: five to ten minutes of run time followed by up to a half hour of cooling off per cycle. Several of the tool test YouTubers have done torture tests on these kind of inflators, and they can and will destroy themselves if you push them too hard: overheating, followed by failure of internal parts, seals, and o-rings in the pump, leading to either total failure of the pump or loss of pressure.

It's also decent and useful for other pneumatic tires: carts, bicycles, motorcycles, lawn tractors. I've got a tools/materials handling cart I use for A/V and convention setup that has pneumatic tires, I store it in an off-site, long term, indoor storage unit and occasionally take my inflator with me when I go to check on the storage unit, you know top up the tires if they're looking a little low or getting a flat spot: it's a relatively handy and cordless tool for that.

Thank you both very much, that is informative and helpful information I haven't seen in my research / review of the product since the battery is an essential part of its utility / capability and cost.

It sounds like a 2Ah battery is adequate for most common basic uses on smaller automotive tires for me and if one wants to be sure of battery capacity not being a limit one can buy and keep handy a couple of the 2Ah ones or one of the 4Ah ones.

Quote from netstroller : I used mine with the 1.5 battery (fully charged) to add 10 PSI to each of my four 235x60x17 tires in 35 degree F no problem, used a little less than 3 volts of battery charge, not sure yet percentage wise how much of total capacity that is. I didn't have a watch or phone with me so I timed by counting, each tire took a count to about 110 for the 10 PSI.

Quote from SullenDave : I don't own the digital version, mine is the older analog gauge model; so take what I say with a grain of salt and weight it accordingly I normally use mine with a 2Ah battery. I don't normally use it for a 0-X refill, it really shines for "topping up" a tire or multiple tires. You can use it to refill a tire, maybe even two with a 2Ah, three or four with a 4Ah. Topping up tires, you definitely can do several with just a 2Ah battery. But at the point of refilling multiple tires you're going to start running up against duty cycle issues: five to ten minutes of run time followed by up to a half hour of cooling off per cycle. Several of the tool test YouTubers have done torture tests on these kind of inflators, and they can and will destroy themselves if you push them too hard: overheating, followed by failure of internal parts, seals, and o-rings in the pump, leading to either total failure of the pump or loss of pressure. It's also decent and useful for other pneumatic tires: carts, bicycles, motorcycles, lawn tractors. I've got a tools/materials handling cart I use for A/V and convention setup that has pneumatic tires, I store it in an off-site, long term, indoor storage unit and occasionally take my inflator with me when I go to check on the storage unit, you know top up the tires if they're looking a little low or getting a flat spot: it's a relatively handy and cordless tool for that.

Quote from tiggerooze : this is always this price.

$37 now

I just picked up both the Hart inflators for $8.00 and $13.00. They work surprisingly well.

Quote from fishyx : I just picked up both the Hart inflators for $8.00 and $13.00. They work surprisingly well.

Link or details. I went to HD and it was 36.98.