More known for its cargo carriers, RoofPax's tire inflator stands out because it offers all three power options, a rarity among the off-brand units we tested. It deflates too. Some inflators have 12V ports so they can effectively be used as an extension lead that connects other accessories to your car’s power. If your car isn’t fitted with a USB port, it’s useful to have a tyre inflator with this feature so that you can charge a tablet or smartphone on the road.

These pumps aren’t just for use with air beds. If you need to pump up a paddling pool, inflatable tent or inflatable furniture, your air bed pump can do it all for you, making it a really useful bit of your camping kit. But it's not ideal. The 2848-20 is a relatively large and heavy unit that's too big to carry around in your daily driver. The valve attachment is screw-on, which is fine for everyday inflating but a (literal) pain for cold fingers to manipulate in extreme weather. Most egregious, there is no alternative power source; the unit requires Milwaukee's proprietary M18 Li-ion battery—and that's not included. We also measured each unit's average decibel reading while operating. We then used a handheld tire gauge to confirm how accurate each unit's integrated pressure gauge was, before and after inflation. Tyre pressures are typically between 30psi and 40psi (or 2 bar and 2.8 bar). How to test your tyre pressureMost portable inflators are rather loud when operating; nearly all of the ones we tested came in at just under 90 decibels, or about as loud as a leaf blower. DC car power cords that plug into your "cigarette lighter" outlet often require the engine to be running to power the device. Services vary but generally best for parcels under 10 kg, cost & compensation varies by service used

Size is probably the most important thing. The smallest inflators are around 20 x 20cm, so you can leave them in your car without losing too much luggage space. The best don’t skimp on the length of the power lead and air hose, which makes it easier to reach all four valves. Most can be preset to stop inflating when your tyre reaches the correct pressure.Renowned brand-name inflators didn't necessarily perform any better than the off-brand ones we tried. Handheld inflators proved to be just as fast as, if not faster than, console units at inflating car tires. Not only does it run cordless via the Li-Ion battery, it will also plug into your car's 12V outlet and includes a wall plug for domestic use. This means you don't have to worry about keeping its battery charged, or buying into yet another battery and charger system if you're not already using the 20V MAX in your garage. Milwaukee's 2848-20 M18 Inflator blew away (sorry again!) the competition in inflation time. It inflated our test tire to 30 psi in just over a minute and hit 45 psi in only about two and a half minutes, allowing us to make a cool inflation GIF with the tire on a Ford Bronco (at top). Both times were nearly five minutes faster than most other inflators we tested, save the Viair. Whichever one is best for your needs. If you're looking for a truly "portable" inflator to keep in your car, opt for one that's small enough to stash in your vehicle and easy to use, such as the Avid Power Pistol Grip. How long do portable tire inflators last? In our test, the Avid Power was more than a full minute faster to both 30 psi and 45 psi than its main rival, the AstroAI pistol-style cordless (below). But instead of an extra battery, it comes with a supplemental 12V DC power cord. ( Note: We tested this unit using the battery.) We also preferred the feel of the Avid's rubberized handle to the AstroAI's grip. It was slightly quieter too.

It’s noisy, dishing out 77dB in operation. And the pressure gauge can be difficult to read since, because it goes up to 250psi, that crucial 0 to 60psi zone is crammed into the first quarter of the dial. However, it pumped up our test tyre from 20 to 30psi in just under two-and-a-half minutes, with no fuss or faff. It’s a shame that the supplied accessories are so basic – just a ball inflator and two adaptors for inflatable toys – still, if you’re looking to spend as little as possible, then the Storm Force Mini does the job.Portable tire inflators come in many shapes and sizes, but they effectively break down into two distinct types: handheld devices and console units. The most important consideration when shopping for a tire inflator is what you'll be using it for. A good quality sleeping bagis an essential camping accessory. At Decathlon, we have a wide choice of sleeping bags for adults and children to give you a comfortable and warm place to rest when you're sleeping under the stars. Our in-house Quechua accessories and sleeping bags cater to every need. Choose from lightweight sleeping bags to warm hooded mummy-style sleeping bags. You're sure to find the perfect sleeping bag to suit everyone and every season.