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Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

A powerful, 400-watt Mobile Power Inverter that converts 12V DC to 110V AC for 800 watts of peak power. Also provides voltage protection, short-circuit protection and overload protection to a variety of devices. Great for use with TV/DVD combos, laptops, cooling fans and other mobile electronics.

Average Customer Rating: 4.29 out of 5 4.3 out of 5 (94 Reviews)
84 of 94 (89%) customers would recommend this product to a friend.

Customer Questions & Answers: 13 Questions |  13 Answers

Customer Reviews

Good but loud, 11/16/2009
By CSAggie2000
Overall Rating: 4 out of 5 4 out of 5

SEems to work well, however, it lets you know it's on. When using in the car just stuff it under the seat and it's fine. Definitely not any louder than the highway noise.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 4 out of 5 4 out of 5
Recommends this product? Yes
Age: 25 - 34
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Once per month
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Review 2 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

Wonderful Product, 11/16/2009
By totalynutz, Georgia
Overall Rating: 5 out of 5 5 out of 5

This product has been great as we really needed a power converter with 2 plugs instead of one. I can charge my laptop while my son charges his Nintendo DSi and there are no arguments. This product was the same price as others in the store with only one plug. This product comes with terminal adapters as well. It's a little big, but still conceals nicely under the seats and has a long plug in order to compensate. Great value, works perfectly!
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 35 - 44
Gender: Female
Has owned product for: 2 - 7 weeks
Uses product: Every day
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Review 3 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

11/13/2009
By beachbrowser, Myrtle Beach SC. 29575
Overall Rating: 5 out of 5 5 out of 5

Very nice product for the cost, but would even be nicer with mounting hardware
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 4 out of 5 4 out of 5
Recommends this product? Yes
Age: 55 - 64
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: A few times per month
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Review 4 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

A very useful product, 11/12/2009
By sparkyIII, Orwell, Ohio
Overall Rating: 4 out of 5 4 out of 5

The Whistler 400 watt inverter works very well for the purpose for which we purchased it. We do not have it on constantly so I couldn't vouch for an application where it remains on all the time.
The quality of the product appears to be very good and it even comes with a spare fuse.
I consider it well worth the money.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 55 - 64
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Every day
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Review 5 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

works great, 11/07/2009
By fivemiler, Lake Havasu City AZ
Overall Rating: 5 out of 5 5 out of 5

Went camping and took 22" TV, Sat box, and dish. We had TV for over 10 hrs. Battery was a small Walmart marine deep cycle. The wife was a happy camper.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 55 - 64
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: A few times per month
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Review 6 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

Good product for price, 11/02/2009
By mknt, Houston, TX
Overall Rating: 4 out of 5 4 out of 5

We bought this inverter to plug in various electronics for road trips and/or camping trips. We recently went on a weekend trip and used it to power our laptop. We've had no issues as of yet. True test will be later this year when we are traveling for the holidays. Some said the fan was loud, we couldn't hear anything over the road noise. Overall good buy!!
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 25 - 34
Gender: Female
Has owned product for: 2 - 7 weeks
Uses product: A few times per year
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Review 7 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

Good Product. Good Value., 10/25/2009
By LLadnar, Sterling, VA
Overall Rating: 4 out of 5 4 out of 5

This is a good product for the price. You can beat the price compared to the cost for other 400W Inverters. I had no problems using this inverter with my laptop. The cooling fan is a little loud. But I overlooked this issue because of the value it provides. I would recommend this product.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 4 out of 5 4 out of 5
Recommends this product? Yes
Age: 35 - 44
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Once per week
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Review 8 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

Convenient, 10/24/2009
By an anonymous customer, Cleveland, Oh
Overall Rating: 5 out of 5 5 out of 5

I bought this product and i was weary due to some bad reviews but ignore all that, mines the only one that counts. I hooked this up to a battery in my trunk and powered a 19 inch tv and super nintendo, very fun. Also it has saved me from when i forget to charge my phone many times because i can plug it up to the cig lighter too. It would be good to have on a roardtrip for sure. Or if your power goes out in your house it would be good to have. Also, alot of people complain about the fan? Dont worry about the fan noise, its not loud at all, the only reason you would hear it is if you drive in dead silence without music....... Well i would say buy one if your looking at the reviews.
Recommends this product? Yes
Age: 14 - 18
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: A few times per month
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3 of 3 people found this review helpful.

Review 9 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

Great Product Value and Peformance, 10/06/2009
By FlyBoyMichagan, Wyoming Michigan
Overall Rating: 4 out of 5 4 out of 5

This thing works great for a laptop computer in the car. the noise is not bad at all, usually way less than typical road noise. the manual cautions about use with a laptop, but it charges the battery very nicely without overheating it. I like the extra set of clip leads for higher power applications. It could use a convient storage container to make it perfect.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 55 - 64
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Once per week
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Review 10 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

no good, 09/21/2009
By an anonymous customer
Overall Rating: 1 out of 5 1 out of 5

will not operate what my 200 watt does this product was of no use to me and was returned
Product Attributes:
Value: 3 out of 5 3 out of 5
Meets Expectations: 1 out of 5 1 out of 5
Recommends this product? No
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0 of 1 people found this review helpful.

Review 11 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

Good Deal, 09/09/2009
By safdoiugsdhfiugsag
Overall Rating: 5 out of 5 5 out of 5

Works great! Fans not too bad noisy. Did run a fan and computer charger. It didn't run a small microwave or blow dryer is just lights up a button telling you it's too big of and item to run. It's great for the smaller things though.
Product Attributes:
Value: 4 out of 5 4 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Has owned product for: 2 - 7 weeks
Uses product: A few times per month
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Review 12 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

Great product, 08/26/2009
By OneBusyMomOfTwo, Meridian, ID
Overall Rating: 5 out of 5 5 out of 5

I bought this to be able to play two DVD players in the car on a road trip. It works great for that. I was concerned about the fan noise after reading other reviews, but when you're on the highway, you can't hear it. I would recommend this product. Great product at a great price.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 45 - 54
Gender: Female
Has owned product for: 2 - 7 weeks
Uses product: A few times per year
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Review 13 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

Great Deal, 08/24/2009
By JTIL, Plainfield , IL
Overall Rating: 4 out of 5 4 out of 5

Had this item for a week now and its working great - really liked the price.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 35 - 44
Gender: Male
Has owned product for: 1 week or less
Uses product: Every few days
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Review 14 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

Fan always runs; overloaded below 400W, 08/12/2009
By RemoteCommunicator, Livermore, CO
Overall Rating: 4 out of 5 4 out of 5

The Whistler 400-watt Power Inverter worked fine out of the box. During operation, the fan runs continuously. With a load of a 150W light bulb, adding a load of a 60W charger caused the inverter to trip its overload circuit and shutdown safely. The inverter may
not handle high loads near rated 400W.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 3 out of 5 3 out of 5
Recommends this product? Yes
Age: 45 - 54
Gender: Male
Has owned product for: 2 - 3 months
Uses product: A few times per month
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0 of 1 people found this review helpful.

Review 15 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

Great value, 08/12/2009
By DaringDan, Detroit, MI
Overall Rating: 5 out of 5 5 out of 5

Very nice, compact unit. Fan is a little noisy, but with 400 watts it obviously needs to keep cool. Compared to everything I looked at, this was a fantastic value and easily runs my laptop. Very satisfied.
Recommends this product? Yes
Age: 35 - 44
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Every few days
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Review 16 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

Dead out of the box, 08/12/2009
By ishowerdaily, Pittsburgh, PA
Overall Rating: 1 out of 5 1 out of 5

WalmPart had a great deal on this and fast shipping. When I plugged it in to use my laptop while driving across the country it didn't work.
Product Attributes:
Value: 1 out of 5 1 out of 5
Meets Expectations: 1 out of 5 1 out of 5
Recommends this product? No
Age: 25 - 34
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: Once per year
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Review 17 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

Read the Instructions, 08/09/2009
By ReadtheInstructions
Overall Rating: 1 out of 5 1 out of 5

Despite clearly stating and picturing a laptop on the packaging as an acceptable charging device the instructions clearly state that the product is not recommended for any type of rechargable battery including cell phones and laptops.
Product Attributes:
Value: 1 out of 5 1 out of 5
Meets Expectations: 1 out of 5 1 out of 5
Recommends this product? No
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1 of 1 people found this review helpful.

Review 18 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

power inverter, 08/01/2009
By KenyaCoffeeLover, Spring Hill, FL
Overall Rating: 5 out of 5 5 out of 5

Great for use during hurricane season in FL! Can run laptops, portable T.V.s, fans, lights & charge up cell phones, etc.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 65 or older
Gender: Male
Has owned product for: 1 week or less
Uses product: A few times per year
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Review 19 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

With this price ($26) its free, 07/30/2009
By Anilaila
Overall Rating: 5 out of 5 5 out of 5

I am an Industrial Electronics Engr. I know the current and wattage rating of this inverter and where & how to use. Its works excellent. Don't think just buy it.
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 5 out of 5 5 out of 5
Recommends this product? Yes
Age: 35 - 44
Gender: Male
Has owned product for: 1 week or less
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Review 20 for Whistler 400-watt Power Inverter with Circuit Pro, PI-400W

Good for the money, 07/24/2009
By fatboy37, northern michigan
Overall Rating: 4 out of 5 4 out of 5

I got this to run three lights at my hunting cabin, it worked great running the lights all weekend without rechargeing the battery, the fan is a little louder than i thought it would be but not bad what i didn't realize was the fan will run even when your not useing juice from the battery. My only real complaint is that one of the studs was striped when it came easy fix with an extra washer. However for the money you can't go wrong!
Product Attributes:
Value: 5 out of 5 5 out of 5
Meets Expectations: 4 out of 5 4 out of 5
Recommends this product? Yes
Age: 35 - 44
Gender: Male
Has owned product for: 2 - 7 weeks
Uses product: A few times per month
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1 of 1 people found this review helpful.
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