Power Inverter 1000 Watts with Three AC Receptacles

Power Inverter 1000 Watts with Three AC Receptacles

Item # WC3720

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12V Power Accessories

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WC3720 - 1000 Watt Wagan Power Inverter
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In Use/Installed

  • Power Inverter
  • Wagan
  • 3 AC Outlets
  • 2 USB Outlets
  • 1000 Watt
Compact 1000 watt AC power inverter lets you use your vehicle's electricity to run your household appliances. It has 3 standard AC outlets, 2 USB power ports, and power and fault LED's. The internal fan prevents the unit from overheating. Call 800-298-8924 to order Wagan 12v power accessories part number WC3720 or order online at etrailer.com. Free expert support on all Wagan products. Guaranteed Lowest Price and Fastest Shipping for Power Inverter 1000 Watts with Three AC Receptacles. 12V Power Accessories reviews from real customers.

  • All Info
  • Reviews (2)
  • Q & A (48)
  • Videos (2)
  • Photos
  • Why etrailer?

Wagan 12V Power Accessories - WC3720

Compact 1000 watt AC power inverter lets you use your vehicle's electricity to run your household appliances. It has 3 standard AC outlets, 2 USB power ports, and power and fault LED's. The internal fan prevents the unit from overheating.


  • Converts 12 volt DC power from vehicle to 115 volt AC power for appliances
  • 1000 Watts Continuous TrueRated Power
  • 2500 Watt Surge Power
  • Power options:
    • (3) United States standard 3-prong outlets
    • (2) 5V, 3A Shared USB power ports
  • Built-in safety features include:
    • Auto reset short circuit protection
    • Overload protection
    • Low battery alarm and shutdown
    • Cooling fan
  • 3' DC cable included

Sample Applications:

  • Laptop Computer
  • Video Game Console
  • Large Screen TV
  • Printer/Computer/Fax
  • Single Range Electric Stove
  • Microwave
  • Small Refrigerator
  • Power Strip
  • Coffee Maker
  • Hair Dryer

Note: If the number of watts required for your electronic device is not listed on the item itself, the number of watts can be determined by multipling the number of amps by the number of volts (amps x volts = watts).

Continuous Power1000 Watts
Peak Surge Power2500 Watts
AC Output Voltage115V
Input Voltage Range10-15V
AC Output WaveformModified Sine Wave
Maximum Efficiency90%
Battery Drain w/ No AC LoadLess than 0.95 amps DC
Low Battery Alarm10.5V +/- 0.5V DC
Low Battery Shutdown9.5V +/- 0.5V DC
Input Range11V to 15V
Internal FusesATO 35A (x3)
Weight3 lbs
Dimensions10.3" x 5.4" x 2.5"

Wagan Tech 37201 1000 Watt AC Inverter - 2,500 Watt Surge Power - 115 Volt AC Output

Replaces 2294

WC3720 Installation InstructionsInstallation Details WC3720 Installation instructions

Video of Power Inverter 1000 Watts with Three AC Receptacles

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Wagan 1000 Watt Power Inverter Review

Speaker 1: Today we're gt be taking a look at the Wagan Tech Power Inverter 1,000 Watts with 3 AC Receptacles, part number WC3720. This heavy-duty inverter can give you 1,000 watts of continuous power. That's enough to run most household appliances, and also great for road trips, on the job site quick applications, and for convenience in emergency situations while camping.When comparing this to other power inverters on our website, this one's going to be the most heavy-duty. 1,000 watts far exceeds the capacity of other inverters. This one does require a little bit more install, as you have to hook it up to the battery directly, and if you want to store it inside the vehicle it can be more difficult to run the wires from your inside to the outside. The other inverters typically plug in through your power outlet, so they're just plug and play.

If you need that extra juice, this is the way to go.It has three power receptacles, two USB ports, and an on/off switch. It comes with one 3 foot power cable and one 3 foot crown cable. There's ring eyelets at each end of the cable that can be connected to your battery and the other end securely connected to your inverter. Its small, portable design will allow you to take it out of your truck when you need it. Just connect the positive cable to the positive on your battery.

This could be noted by red coloring and a plus symbol. Connect your negative to the negative cable on your battery, and this can be noted by a black cable and the minus symbol. Then connect the black to the negative on your inverter and the red to the positive on your inverter.Let's take a look and see what this thing can do. We can power our grinder here, and plenty of other tools. With 1,000 watts at 120 volts, that's roughly 8.3 amps.

It has built in safety features such as auto-reset, short circuit protection, overload protection, low battery alarm and shut down, and a cooling fan. The two USB ports put out 5 volts and share a 3 amp output.Here we've got our Redarc mounted inside of our vehicle. This is ideal for long road trips. This way, you got kids in the back, they can plug in their Xbox, laptops. It's also great for business trips.

Here we've got our laptop plugged in, and it's powered directly off of our inverter here. If you need to use your laptop or you need to charge it up on a long road trip, this is perfect for those traveling businessmen; you're ready to go at any time. Never miss a meeting, Skype conference, or email with this system.When you're done with work, plug in your Xbox and have some fun. Whether you're out on a road trip, taking a break at a rest stop, you have two jobs and you're taking a break between jobs chilling your truck, on the slopes but you're taking a moment to warm up, so you can stop and have some fun, stream some movies from your gaming system, pop in your favorite game, hang out with friends anywhere, anytime. With these three outlets you can use multiple devices and push your vehicle's utility to the limits.Now, you are going to need some additional wire to run this up from the battery from here. You can get some additional wire at etrailer.com with part number BBW20026. This will have enough wire to run from the battery back to your Redarc in any position, and will also be ideal if mounting it inside of your RV, because it's a 24 foot length of wire, 3 gauge thickness so it can handle the amperage drawn 00:03:16. Now, if running your own wire, you're likely going to need some new eyelets to connect it to your battery and to your inverter. You can pick some of these up at etrailer.com with part number SWC57048.Now, if you're mounting your inverter inside your vehicle permanently, it is a good idea to have your cable hooked to a circuit breaker or fuse just in case of emergencies, if there's a collision or the wire would short out, it wouldn't cause and welding to the vehicle or potentially a fire hazard. The circuit breaker we're using here on our project is part number PK54871PL, and this is rated for 100 amps so it'll be able to provide plenty of juice back to our 1,000 watt inverter. When hooking up the circuit breaker for your inverter, you're going to want to put the battery positive to your inverter on one side of the circuit breaker, and then a cable from the circuit breaker to the battery on the other side. This will ensure that you're properly protected. That completes our look at the Wagan Tech Power Inverter 1,000 Watts with 3 AC Receptacles.

Customer Reviews

Power Inverter 1000 Watts with Three AC Receptacles - WC3720

Average Customer Rating:  4.5 out of 5 stars   (2 Customer Reviews)

Compact 1000 watt AC power inverter lets you use your vehicle's electricity to run your household appliances. It has 3 standard AC outlets, 2 USB power ports, and power and fault LED's. The internal fan prevents the unit from overheating.

- WC3720

I think this will be good as soon as I figure out where to put it in my trailer. its serious 547916

- WC3720

Haven't used the product yet , however, the USPS did nice job of practically destroying the package and took it forever to get here. I would prefer ups or fed ex because it seems like they care. 542767


Ask the Experts about this Wagan 12V Power Accessories
Do you have a question about this 12V Power Accessory?

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  • You can absolutely use a battery in your trailer to do all the things you desire. You will simply want to get a deep cycle battery and get the amp hour rating you desire. The CTEK D250S Dual Battery Charger 12V- 20a, 5 step, Heavy Duty# CTEK40186 along with the discontinued CTEK SmartPass Energy Management Unit for CTEK D250S DUAL Battery Charger CTEK56676 are a great combination for that as the D250S alone will not work well on the high-capacity deep cell batteries. Instead...
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  • Are Power Inverter With Continuous Power Modified Sine or Pure Sine Wave?
  • Continuous power does not mean modified or pure sine wave. If you have a specific model you are looking at, I can help further. For instance, the Power Inverter 1000 Watts with Three AC Receptacles # WC3720 says continuous power and is a Modified Sine Wave AC Output waveform. Some of the sample applications are even confusing as they are often used as Pure Sine wave applications, but based on the size are adequate. Then the Pure Sine Wave inverter, the Wagan Elite 200 Watt PRO Pure...
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  • Best Way To Power an Enclosed Travel Trailer
  • I do have a few options for you to power a cordless drill, lights, and coffee pot inside you enclosed travel trailer but using a solar panel would not be the best or most cost effective setup. Basically, you are going to end up having to cover the entire roof of your trailer to power the above items. Instead, I recommend purchasing a 12 volt auxiliary battery like the one you would find in a car and then using a power inverter like part # WC3720 as well as a battery charger like part...
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  • Recommended Wiring for RedArc BCDC Charger Used for Auxiliary Battery to Power Inverter
  • To connect your Redarc In-Vehicle BCDC Battery Charger - Dual Input - DC to DC - 12V/24V - 40 Amp # 331-BCDC1240D, you will need the 60-Amp MIDI Fuse Kit for Redarc In-Vehicle 40-Amp BCDC Battery Charger # 331-FK60. This will protect your vehicle and battery from potentially damaging overcurrent from short circuits or overloads. You will run the Red Wire from your RedArc unit to the fuse, and then from the fuse to the positive battery terminal on your vehicle start battery. I've...
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  • Recommended Heating Pad to Keep Battery Warm in Freezing Weather
  • I recommend using one of the Kat's Heaters pads, like part # KH22200, from the linked selection as they are specifically designed for batteries. These do plug into an AC power source though so you would need access to that kind of outlet or use an inverter like the Go Power # 34280175 or Wagan # WC3720 to convert DC power to AC power for the heater. I would be hesitant to use one of the ThermaHeat RV Dump Valve Pipe and Elbow Heating Pads, like part # 277-000161 that you referenced,...
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  • How to Use an AC Powered Air Conditioning Unit on a DC Powered Travel Trailer
  • I do have a way for you to install an AC powered air conditioning unit on your travel trailer that operates on DC power but the 12 volt power circuit on the 7-way trailer connector will not be sufficient to power an inverter running a 10,000 btu air conditioning unit. A 10,000 btu air conditioner in going to require around 2,000 watts for startup and 700 watts of continuous power to run. These figures are averages and you will want to check your unit for exact specifications. If you...
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  • Add Battery/12V System To Existing 120V System In Pop Up Trailer
  • For the application that you are attempting, you will need to install a battery and wire the trailer to run off that battery instead of running off the shore power at a campsite. If all of your trailer lights and appliances run off of 120V then the 12 volt battery is not going to power them. you will need to add 12 volt accessories and lights to the trailer. If the trailer currently uses a converter from the shore power and the accessories and lighting run on 12 volts then you can run them...
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  • Powering a Refrigerator in a Trailer While Towing
  • Some items in a trailer or RV will run off of 12 volt DC power or AC power so if your fridge runs when not connected to shore power then it will run off of the battery. That battery can receive a maintenance charge from the 12 volt circuit on a 7-Way trailer connector but the fridge would draw power faster than the 12 volt circuit can charge. What you would need to do to provide the best charge to the battery is use a DC to DC charger while you are towing such as # CTEK40186. If the...
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  • Inverter Recommendation for Powering Outdoor Refrigerator
  • What you are asking about is very possible, but you'll want to consider how much amperage the fridge draws to see if your charging system/battery will handle the load. Going with heavier gauge wire is definitely recommended. Especially since you mentioned it's a distance of 20 feet. How heavy does depend on the amperage draw of the fridge as well. The Wagan inverter part # WC3720 would be a great choice for this as it can put out up to 1,000 watts of continuous power. One of it's intended...
    view full answer...

  • Inverter Recommendation for Trailer Interior for Powering Lighting
  • Do your interior lights power with 12 volts or are they AC power? Are you looking for an inverter to convert to 120 volts? We have inverters like the part # WC3720 which converts 12 volts to 120 which then gives you outlets for the lights to plug into if they are the standard interior style of lights.
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  • How to Determine Correct DC to AC Inverter Power Rating for 800-Watt Load
  • It is never an ideal situation to use a device continually at its absolute maximum capacity. Since you are powering an 800-watt motor with an 800-watt inverter it is definitely being strained and that is the cause for the inverter's alarm. Ideally your inverter will have much more capacity than the connected device requires. It is definitely not a good idea to use an 800-watt inverter with an 800-watt device. All devices will draw more peak power than their continuous rating suggests. The...
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  • Recommended Vent Setup to Cool Enclosed Trailer Mobile Workshop
  • Even the smallest RV air conditioning units we offer will require 115-volt AC electrical service of at least 11-amps to operate properly. The Atwood Air Command Rooftop RV Air Conditioner # AT15025-21 will draw almost 4000-watts at startup and even once running it will still need close to 1300-watts to operate. Delivering this amount of power via high capacity 12V batteries and an inverter such as the 5000-watt Go Power # 34280179 will be a fairly costly and bulky proposition. Instead...
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  • Can Wagan Power Inverter # 02294 Power a Mini-Fridge in a Camper
  • The Wagan Power Inverter # WC3720 that you referenced should be able to run your mini-fridge in your camper without any problems. To confirm this check your appliance for how many watts are required. If the wattage is not listed you can simply determine this number by multiplying the number of amps by the number of volts (amps x volts = watts). This inverter has a continuous power rating of 1000 Watts. I have attached a brief installation video as well as the installation instructions...
    view full answer...

  • Should a Relay be Used With Wagan Power Inverter
  • Though I can see why you might think you need a relay, I do not recommend using one with the Wagan Power Inverter with Three AC Receptacles # WC3720. This inverter has a simple On/Off switch; I assume you want to use a relay to conserve power from your battery but the same thing can be accomplished simply by turning the relay off. Just be sure to use the correctly rated fuse and wire gauge for the length of wire you need (which is included in the installation manual I've linked) to...
    view full answer...

  • Battery Isolation Solenoid Installation on a Cab Over Camper
  • A deep cycle battery can be used in this scenario with no problems as long as it is wired properly. A deep cycle battery is capable of longer run times, more amp hours = better battery, and more charging cycles for deep discharges. I recommend using a Group 24, 28, or 32 Deep Cycle battery. Wiring your truck battery to a secondary 12v Deep Cycle battery through the Battery Isolation Solenoid , # TR118665, will prevent the cab over camper from drawing power from your truck battery when...
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  • What Deep Cycle Battery is Needed to Run 450 Watt Appliances for 7 Hours with Inverter # WC3720
  • You will need a deep cycle battery with a capacity of at least 315 amp hours to run 450 watts of power for 7 hours. If you check on page 7 of the linked instructions for the Power Inverter 1000 Watts with Three AC Receptacles # WC3720 it states to divide the amount of watts you are using by 10 (450/10 = 45) and then multiply that by the amount of hours you need them to last (7) which then gives you the amount of amp hours your battery needs to be (45 x 7 = 315). As noted in the...
    view full answer...

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Info for this part was:

Edited by:
Tyler C
Expert Research:
Jameson C
Expert Research:
Adam R
Installed by:
Cole B
Video Edited:
Chris R
Photos by:
Zach O
Written by:
Matthew S

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