what is the highest Psi?

It's rated for 150 psi / 10.3 bar. More info at http://uk.ryobitools.eu/power-tools-en/fix-finishing-tools-en/r18i-en/r18i-en/

How long can you run this, a) could you do 4 Tyres from flat say 30 psi,? b) would a 1.5Ah battery cope or would you need to replace before complete

I use mine to inflate my Motorbike tyres (37 and 42 psi) and rarely need to recharge it, so I would imagine it would not have any problem doing four tyres up to 30 psi on one charge. I'd put money on it being able to do that at least twice if not three times over.

Is this suitable for suvs ? the extra weight of them generally prevents compressors from working.

This is actually a good question. Being a Ryobi tool I would expect it would be able to, cheaper models should also be able to although they will probably be slower. Anyone who thinks the weight of a vehicle has nothing to do with tyre inflation is clearly a fool or has never inflated the same tyre on and off the same vehicle!...... (the tyre inflates much faster off a vehicle or if the car is jacked up slightly)

Do you have to screw this onto the tyre thread of a vehicle or is it a pressure valve you hold in place like the petrol station tyre Inflaters?

No need to thread it on, if you look inside the pump nozzle it's pretty clear. Just push it on, then after a small hiss of escaping gas depress the lever. Use the power button to choose your preferred\desired pressure scale, as indicated by the lit panel & blow! Sorry inflate, really handy & portable.( Takes all the pressure off you while you put the pressure on)

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Ryobi R18I-0 18V ONE+ Cordless Inflator (Battery & Charger Excluded)

Ryobi R18I-0 18V ONE+ Cordless Inflator (Battery & Charger Excluded)

Product ID: 47958019

Details

Brand
RYOBI
Noise level
86 Decibels
Power source
Battery
Recommended uses for product
Tire Inflation
Voltage
18.0

⚡18V ONE+ battery power

📊Digital pressure readout with auto shutoff

⏱️Fast inflation & deflation modes

$360.02

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Description

🚀 Inflate Fast, Live Free — Power Your Air Needs with Ryobi!

ALL IN ONE STORAGE - Onboard hose and accessory storage keeps everything organized and ready to go.
PRECISION INFLATION - Digital readout with auto shutoff ensures perfect pressure every time—no guesswork.
POWER MEETS PORTABILITY - Cordless 18V ONE+ system powers over 100 tools—inflate anywhere, anytime.
SMART DESIGN SMART USE - Wrap-around hose storage and quick deflation mode save time and hassle.
DUAL FUNCTION VERSATILITY - Switch seamlessly between high-pressure tire inflation and high-volume inflatables.

The Ryobi R18I-0 is a lightweight, cordless 18V inflator designed for fast, precise inflation and deflation of tires and large inflatables. Featuring a digital pressure readout with auto shutoff, dual high/low pressure modes, and onboard accessory storage, it integrates seamlessly into the Ryobi ONE+ battery system powering 100+ tools. Ideal for professionals and enthusiasts seeking portable, efficient air inflation with smart, user-friendly controls.

Specifications

ASIN	B00B3FRB9Y
Air Flow Capacity	5 Litres Per Minute
Best Sellers Rank	67,262 in Automotive ( See Top 100 in Automotive ) 258 in Portable Air Compressors
Brand	RYOBI
Capacity	18 Volts
Colour	Green
Compatible Hose Diameter	0.71 Metres
Customer Reviews	4.6 out of 5 stars 2,483 Reviews
Global Trade Identification Number	04892210122780
Hose Length	711 Millimetres
Included Components	1 x 711 mm compressed air hose with car valve adapter, 756 hose, presta valve adapter, adapter for air mattresses, ball needle
Item Dimensions L x W x H	26.7L x 169W x 200H centimetres
Item Type Name	18V ONE+ Cordless Multi Inflator (Bare Tool)
Item Weight	1.8 Kilograms
Manufacturer	Ryobi
Manufacturer Warranty Description	2 year manufacturer.
Material	Aluminium
Maximum Current	15 Amps
Maximum Horsepower	0.75 Horsepower
Maximum Power	18 Watts
Maximum Pressure	150 Pound per Square Inch
Model Name	R18I-0
Model Number	R18I-0
Noise level	86 Decibels
Part Number	5133001834
Power source	Battery Powered
Recommended Uses For Product	Tire Inflation
Recommended uses for product	Tire Inflation
Sound Level	86 Decibels
Special Features	Portable, Quick Inflation
Special feature	Portable, Quick Inflation
Style	Wrap
Tank Volume	5 Litres
UPC	798256204739
Unit Count	1.0 count
Voltage	18.0

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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$360.02

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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