The SUV clicks at the campsite. Checkout is at eleven. Roadside asks for a street address.
For RV and camper owners, the two things that end a trip early — the tow vehicle drained flat by a weekend of dome lights and phone chargers, and a trailer tire reading 38 on departure morning — are fixed by one hand-sized unit in the door pocket: it starts the SUV or pickup itself in about three minutes, and it fills the tire to your number and stops itself, right there at the site. No second vehicle, no cables, no driving back to town for a pump that stops at 50. Red clip, black clip, green light, key. Hose on, set 65, start.
Everything it does, in 35 seconds — the tire, the battery, the phone.
Why two? Because the one in the truck that tows gets used at the campground, and the one in the car at home is the one that stops a call from a parking lot while you're three states away. $109.00 for two is $29 less than buying twice.
Free shipping · order today, arrives Sun Oct 11 – Wed Oct 14
A camping weekend is the worst thing you can do to a battery. Doors open, lights on, everything charging, then a cold night. It fades for weeks and picks departure morning. The device costs less than one late checkout and a ruined last day.
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At 7 mpg towing, a soft trailer tire costs you gas first and the trip second
Trailer tires lose a pound a month sitting and want 50–65 psi, so a trailer that sat since spring leaves low every time. Honest number: $18–37 each way on a long tow, roughly $100 a season. The real reason to check is the tire that lets go at 65 mph in August heat — under-inflation is a leading cause of trailer blowouts, and most gas-station pumps stop at 50 psi anyway. Ten minutes at the site before you hitch, six tires, one hose, and it stops itself at the number.
Not a battery. The last day of the trip.
At home a dead battery is an annoyance. At a state park an hour from the highway it's a two-to-three-hour roadside window, a late-checkout fee, a hitched trailer you can't leave, and the morning you drove four hours for spent sitting on the picnic table. The battery was never the expensive part.
And it isn't bad luck. Two evenings of dome lights, three phones and a tablet on the ports, the fridge on the car's 12-volt while you set up, then a cold night: a camping weekend drains a battery harder than a month of commuting. It fades for weeks. The slow crank when you left home was the warning. Sunday at the site is the bill.
See it working — the tire, then the van
Nothing sped up, nothing cut. The hose goes on the valve, the pump runs and stops itself at the number. Then the clamps go on a van battery: red, black, green light, start.
Watch how little the person does. Screw on, press, wait. That's the whole skill.
How to use it — it's genuinely this easy
This is the entire manual, honestly.
Low tire
- Screw the hose onto the tire valve — same fitting as the gas station pump.
- Press the car button. It sets itself to what a car tire needs (your exact number is on the sticker inside the driver's door).
- Press start. It fills, then stops itself at the number — you can't over-inflate.
About 90 seconds on a low tire, and it stops itself.
Won't start
- Clip red to red, black to black on the battery.
- Wait for the steady green light — the smart cable checks everything for you first. If anything is wrong, it does nothing and tells you.
- Turn the key. The car starts. Unclip and drive.
The clamps cannot spark — ever. People who have never used jumper cables do this on the first try.
Sunday, 7:40, the site next door already gone
Trailer packed, kids asleep, checkout at eleven. The SUV clicks. The camp host's truck is gone, the site next door left at dawn, and roadside wants a street address the park doesn't have.
Now: red clip, black clip, wait for the green light, turn the key. The SUV starts. You drop the unit back in the door pocket, hitch up, and you're on the road with the whole morning still yours. Nobody had to find the loop. You had the thing.
The trailer tire that reads 38 on departure morning
Trailer tires lose pressure sitting between trips, and a low one on a hot road is how trailer tires blow. You check them on departure morning — and one is low, and the nearest gas station pump is twenty miles back and stops at 50 anyway.
Hose on the valve, set the number from the tire's sidewall, press start. It fills and stops itself at the number — the trailer's tires and the SUV's, at the site, before you hitch. And on a week away, the side port keeps the phone with the campground bookings alive.
What you'll actually experience
It's loud. Like a small hair dryer, for about ninety seconds. Anything that moves air this fast is.
Give it a top-up charge every 2–3 months. Like a phone you rarely use. Door pocket, not trunk, is what makes this easy to remember.
It starts the vehicle that tows. It is not a charger for the trailer's house battery — that's the converter, the truck's alternator or solar. This is for the morning the SUV or pickup clicks.
Trailer tires run higher pressure than car tires. Set the number from the sidewall and it stops there. If your trailer tires are rated above 65 psi, email us before you buy and we'll tell you straight.
A completely flat tire takes longer. About 6–7 minutes instead of ninety seconds. And if the tire has a hole, air won't fix it.
Below freezing, fewer starts per charge. That's lithium batteries, not a defect. Go into winter charged.
It wants at least half a charge to start a car, and it isn't waterproof. Keep it charged, keep it dry — that's the whole care routine.
A battery that has genuinely died won't come back. This starts a car whose battery is flat — lights left on, a cold night, a van that sat all weekend. If the battery itself has failed, you need a new battery. This gets you to the shop to buy one instead of paying for a tow to get there.
Compared to what you'd do otherwise
| JumpAir Pro | Roadside to a campground | Cables + a neighbouring site | Drive to town for a pump | |
|---|---|---|---|---|
| Where it happens | At the site, before you hitch | If the driver finds the loop | Only if someone's still there | 20–40 miles the wrong way |
| How long | About 3 minutes | 2 to 3 hours | 20 min, if they'll come over | An hour, plus quarters |
| What it costs you | $69.00, once | Late checkout, and the morning | A favour, and a spark risk | The good spot at the next park |
| Fixes the tire too | Yes — trailer and tow vehicle | No | No | Only to 50 psi |
What the numbers on the screen mean
In plain words — because nobody should need an engineering degree to put air in a tire.
The exact numbers, if you like details
Battery: 10,000 mAh (29.6 Wh) · Starting power: 800 A peak (400 A start current) for 12 V car and van batteries · Pump: 90 W, runs up to 20 minutes continuously · Recharges by USB-C fast charging (18 W) · Presets: car 36 PSI, motorcycle 32, bicycle 30, ball 8, custom · Units: PSI, BAR, KPA, kg/cm² · Smart clamp with reverse-polarity and short-circuit protection · Light: white, SOS, and fast-flash · Works from -10°C to +45°C · Fills a completely flat car tire in about 6.5 minutes · Spark-proof clamps · CE and FCC certified · If stored unused, charge every 3 months.
What's in the box
The JumpAir Pro · the smart jumper clamps · the air hose · 4 nozzle tips (bike tires, balls, inflatables) · USB-C charging cable · a one-page guide you won't actually need. Nothing to assemble.
Questions, answered honestly
Will it start my tow vehicle — an SUV, a half-ton pickup?
Yes — 12 V gas SUVs, pickups and cars, rated at 800 A peak. For a large diesel truck or a motorhome engine, email us the engine size before you buy and we'll tell you straight.
Can it charge or jump the trailer's house battery?
No, and we'd rather say so now. It starts the vehicle that tows. The trailer's deep-cycle battery is charged by the converter on shore power, the truck's alternator while towing, or solar. Keep those; this covers the morning the SUV clicks.
Will it fill trailer tires, not just car tires?
Yes. Set the number from the tire's sidewall and it stops itself there. Trailer tires run higher than car tires — if yours are rated above 65 psi, email us first and we'll confirm for your size.
I've got roadside through the RV insurance. Why this?
Coverage sends a truck after — two to three hours to a campground, and only if the driver can find the site. This is the version where nobody has to come, and the last morning of the trip stays yours. Keep the coverage for what this can't fix: a blowout, a snapped belt, a battery that has genuinely died.
Does it drain if the kids charge phones from it all weekend?
A full phone charge uses roughly a fifth of it. Keep it above half if you want a guaranteed jump start that morning — the screen shows the level. Charge it from the same USB-C cable as your phone, in the SUV, while you drive.
Is it safe if I've never touched a car battery?
That's exactly who the clamps were designed for. They cannot spark, they detect reversed connections and short circuits, and they simply do nothing until everything is right — then the green light tells you.
Will it be dead when I actually need it?
It holds its charge for months, but give it a top-up every 2–3 months, like a phone you rarely use. Keeping it in the door pocket rather than the trunk is what makes people remember. The ones that fail are the ones people never see.
Does it work in cold weather?
Yes, from -10°C (14°F) — and it watches its own temperature. Below freezing you'll get fewer jump starts per charge; that's lithium batteries, not a fault. Go into winter with it charged.
What if my battery is completely dead, not just weak?
It handles a normal dead battery — lights left on, a car that sat for days. And for a battery so drained the device can't even detect it, there's a rescue mode: a 2-second long-press forces the start. If a battery has genuinely failed, no jump starter fixes that — this gets you to the shop instead of paying for a tow to get there.
Will it work if my tire is completely flat?
Yes — about 6–7 minutes rather than ninety seconds. Important: if the tire went flat suddenly, or you can hear air escaping, or you can see damage, don't drive on it. Air won't fix a hole.
Is it loud?
Yes. Like a small hair dryer, for about ninety seconds on a low tire. Anything that moves air this fast is.
What if it breaks?
Email us with your order number and we replace it — that's the 12-month replacement warranty. And 60-day returns if you change your mind — we pay the return shipping. A person answers; support isn't outsourced.
How fast does it ship, and will I pay anything at delivery?
2–5 business days from our warehouse in Pennsylvania. The price on this page is the price you pay — free shipping, no taxes added at checkout, nothing owed to the courier at your door.
If it ever lets you down, we replace it.
Email support@jumpairpro.com with your order number. A person reads it and answers — usually the same day. 12-month replacement warranty, 60-day free returns.
JumpAir · 102 Queens Dr, King of Prussia, PA 19406, USA
$69.00Buy now