Wagan Power Dome EX 400-Watt Jump Starter with Built-In Air Compressor

Wagan Power Dome EX 400-Watt Jump Starter with Built-In Air Compressor

Power Dome EX is a multi-purpose portable & rechargeable emergency power source. It can be used as a power source for 110volt AC or 12volt DC applications such as computers, TVs, fax machines, audio, fans, electrical tools, etc. It can also start your car engine in an emergency situation. Recommended to fully charge 24-36 hours before initial use, after each use and every 6 months. Safety Features: Overload protection, short circuit protection and UL listed.

The Wagan 400-Watt Power Dome EX is a powerful portable power source designed to provide AC and DC power and functionality wherever you need it. Built around a rechargeable 18 amp-hour sealed lead-acid battery, the Power Dome EX provides enough jumpstarting power to revive all but the largest of car batteries, while its built-in 260 PSI air compressor can be used to quickly inflate car tires and sports equipment. It contains one DC outlet and two grounded AC outlets which utilize the built-in 400 watt inverter. Additional features include: heavy-duty 6 gauge / 24 inch battery clamps, a 5-LED work light, a USB power port, a built-in AM/FM radio, an audio output jack and more.

Front view of the Wagan 400-Watt Power Dome EX Jumpstarter using DC power to charge a handheld device

Convenient power to deal with any situation you encounter on the road.
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A Multifunctional Device for Everyone to Use and Enjoy

The Wagan 400-Watt Power Dome EX jumpstarter with built-in air compressor is an amazing all-in-one portable unit that provides versatility and power exactly when you need it, whether it’s on the road, at a campsite, at home, etc. With it you can always arrive to your destination safely, plus have your trusted electronics charged and ready for use. Keep the Power Dome EX in your trunk and have confidence that you would be prepared for a roadside emergency. With the Power Dome EX you can inflate your own tires and jumpstart your own weak or dead vehicle battery – that means never having to wait for a tow truck or flag down an unknown driver passing through. Plus use the high intensity 5 LED lights if you experience vehicle troubles at night.

The Wagan Power Dome EX also offers maximum convenience. Are you going camping or plan on being in an area without electrical outlets nearby? No problem. The Power Dome EX has two, three pronged AC outlets providing up to 400 watts, with 800 watt peak surge power of 110 volt house current. It also has one DC outlet to power 12 volt appliances away from your vehicle. Sample appliances serviceable include: laptops, power tools, video games, TVs, cell phones, MP3 players, digital cameras, etc. Plus the powerful 260 PSI air compressor also inflates sports balls (needles included), rafts, air mattresses, etc., while inflating 16″ tires in only 5-10 minutes. Another useful feature is the AM/FM radio with antenna. Stay informed by listening to the latest news and weather updates during a blackout or emergency. In addition, the Power Dome EX also has a built-in USB power port to charge your MP3 player, digital camera or cell phone. It even allows for use of its audio input socket to listen to your MP3 or CD player. Finally the Wagan Power Dome EX’s rubber housing on the handle and along its perimeter ensure the item’s strength and durability for many years to come. This comfortable handle allows for easy portability from one vehicle or location to another, providing power wherever you go.

AC charging adapter included with the Wagan 400-Watt Power Dome EX

Charge with standard household AC power with included adapter.
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DC charging adapter included with the Wagan 400-Watt Power Dome EX

DC adapter allows for in-car charging while motor is running.
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Air compressor inflation accessories included with the Wagan 400-Watt Power Dome EX

Included inflation accessories allow the built-in compressor to inflate everything from tires to sports equipment.
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Easy to Charge and Maintain

The Power Dome EX contains a rechargeable 18Ah sealed lead acid battery. AC and DC adapters are included for recharging at home or in your vehicle while you drive. After the initial charge, it’s recommend that you charge the unit for around 34 hours every 2 to 3 months, or more often if the product has been used frequently. Press the battery status indicator to view how charged the item is on the volt meter readout.

Key Features

  • 600 Amp jump starter with heavy duty cable and clamps
  • 260 PSI high flow air compressor with easy-read analog pressure gauge for inflating tires and accessories
  • 400 watt power inverter (800 watts peak)
  • Two grounded 115 volt AC outlets
  • One 12 volt accessory outlet for powering DC appliance (loads to 11 Amps)
  • One USB power port for charging/operating cell phones, PDAs, and MP3 players
  • AM/FM radio with built-in speaker and audio input jack for headphones
  • Bright area light – LED type for long battery life
  • AC recharging adapter; DC recharging adapter (fused)
  • Easy-read analog voltmeter for checking battery status
  • Jump start cable polarity indicator for safety


Battery – Sealed lead-acid battery/rechargeable/12 volt/18 amp-hours
Work Light – 5 LED
Compressor – 260 PSI; 1.5 ft high-pressure air hose; analog gauge
Inverter – 2 AC Outlets (115 volts AC 60 Hz)
Maximum Inverter Output Power – 400 Watts
Peak Power – 800 watts peak surge for a max of 0.3 sec
I2V Accessory Outlet – I2 volt, 11 amps max
USB Power Port – 5V up to 500 mA
AM/FM Radio – AM 520 to 1710 kHz/FM 88 to 108 MHz
Audio Output Jack – 3.5 mm diameter (1/8 inch)
Max Recharging Time (AC) – 34 hours
Max Recharging Time (DC) with Engine Running – 12 hours
Jumper Cables and Clamps – 6 Gauge heavy-duty clamps, 24 inches

What’s in the Box

  • Wagan 400-Watt Power Dome EX Jumpstarter with Built-in Air Compressor
  • AC and DC adapters to recharge the item
  • Air compressor accessories (needles)
  • Instruction manual

One-Year Limited Warranty

Wagan offers a (1) one-year limited warranty for defective items only. Customers have 1 year from the date of purchase to submit their warranty claim to our customer service department if an item is defective. Valid proof of purchase is required to activate the warranty, with additional warranty details are listed on the insert card that is shipped with your purchase.

About Wagan Corporation

Wagan Corporation is in the business of high-tech automotive accessories. They are committed to delivering products that support the needs of today’s and future fast paced lifestyle with comfort and convenience. Wagan Corporation emerged with production in the automotive accessory market with simpler items now to more innovative products for laptops, cellular phones, travel and mobile accessory segments. They design and focus their products to support the lifestyle of “people-on-the-go.” Wagan Corporation is able to use economics of scale to offer consistently reasonable prices to develop long term relationship with retailers. As a global supplier of automotive accessory products, quality and customer satisfaction are always our top priorities.

Product Features

  • 600 cranking amp auto jump starter
  • 260 PSI high power motor air compressor; Has 2 AC Outlets and 1 DC outlets
  • 400 watt AC power inverter, high intensity LED light
  • Built-in AM/FM radio with iPod™ input
  • This item cannot be returned and has additional shipping restrictions

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Deelaureen ( Newport News Va says:

Poor quality, worse Customer Service…Thank godness for Amazon Ironically, shortly before I purchased this item I told myself I would start leaving feedback on services and items I utilized. I figured it was only fair as I usually do tons of research on things before I spend my money and use customer reviews whenever possible. With that in mind, here is what I think of Wagan and their Power Dome EX…We were driving cross country and were looking for an inverter/compressor/jumpstarter to carry for emergencies. Like most people we didn’t need all the extra bells and whistles but they seemed like nice bonuses that were essentially free for the price. I read the reviews and, as you will see or have seen, they are are all over the place from ‘love it’ to ‘junk.’ I know even in the best product there is always a few ranting, cursing, grammar-slaughtering diatribes from someone who feels they were wronged but usually you can pick those ones out and disregard them. This item though almost seems like their quality really does run the entire spectrum. I can only speak for myself but I have to lean strongly towards ‘Junk.’ Like some other reviewers noted, right out of the box parts fell out and the item seemed poorly assembled. The casing did not line up and some of the trim pieces were partially falling off. Not a huge deal to me as it was going to bounce around in the back of the car or sit in the garage but not a great first impression nonetheless. Following the instructions I charged the unit for 48 hours before using which meant I couldn’t test until it was about time to hit the road in two days. No issues during charging and after I removed it I did a cursory check off all the items. Everything seemed to function properly, compressor hummed, light and radio came on, inverter fan came on, etc. The problem came when we moved to to the back of the car and plugged in my son’s Nintendo DS charger to the AC outlet. We turned on the inverter and the fan came on but DS wasn’t showing a charge. Tried another item, a small fish tank bubbler we were bringing (yes, we moved with fish) and that didn’t run either. Shortly after unplugging that we noticed smoke starting to blow out of the vents from the inverter fan on the unit and filling up the car. I removed the unit and shut it off stopping the smoke. The smoke was clearly electrical in nature (I’ve been a firefighter for 15 years so please don’t waste time in your review second guessing my assessment) but the fans had continued to work and the unit was not particularily hot to the touch. Not a great start to the trip as we now had no power for the fish bubbler and the car smelled like burnt wires (not to mention I was pissed I had a $100 paperweight) but what do you do? As our beloingings were already packed in the moving truck, and I was afraid if I put the unit in with them it would burn it down, I had no choice but to let the unit cool down for a while as the car aired out and then then threw it in the back of our car to keep an eye on and deal with when we reached CA.about a week later when I got around to dealing with it I went on Amazon to return I found out that, because of the battery, it could not be returned. I figured that I would call Wagan directly and that they would take care of it. After being on hold for quite a while, I finally spoke to a young man that seemed thoroughly disinterested in helping me. It sounded to me as if he fielded a fair amount of complaint calls as he seemed less than surprised I was calling and never even asked what happened before telling me I could return the item to them (at my cost) and they would send me a replacement. I told him that #1, I had already paid shipping once and wasn’t going to pay it again to return their faulty merchandise, and #2, I didn’t want a replacement as I didn’t trust the quality. He told me they didn’t do refunds and I would have to talk to Amazon. I asked to speak to a Supervisor and he told me that none were available but he would take my number and I would be contacted (It’s been almost a month and nothing yet but in fairness he never said when they would call back so maybe one of these days but I’m not holding my breath…).Already wound up I called Amazon ready for a fight. Dealing with Amazon as much as I had in the past I should have known better. I spoke to ‘Phil’ who listened to my problem, asked me to hold for a moment, and came back and informed me that while it is true Amazon cannot accept returns on the item they would refund my account for the full cost without the item and asked only that I find a ‘responsible’ way to dispose of or recycle the unit. Like I said, I should have known Amazon would stand behind something they sold. It’s too bad they can’t vett all their vendors to find ones that have the same approach but that’s probably not possible.So, in closing, here is my final scorecard. The Wagan Powerdome 400 I received was faulty and, most likely, a serious fire hazard. Apparently this is not true of all of them…

JimmyJames "Gadget Guru" says:

It Does the Trick! I have owned this a few weeks and have had to use it for 5 jumps and inflated 4 tires without it even going down below 13 volts Its great to have, you don’t have to drag out those long cables and use another car to get a jump, and it started it right up. It will come in handy for storms also– I love It..UPDATE!!STILL GOING STRONG!!!I have been using this for two and a half years now to jump cars and even for lights during power outages and it still works great..Im sorry some had had trouble..but mine is great ..I did have to tape on some decals that were falling off..but other than that it is still working..Im glad I have it..

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