CyberPower CPS150BU 150 Watt Swivel Head Mobile Power Inverter with USB Charging Port and AC Outlet

• Built-in Surge Protection:Safely protect your electronics against power fluctuations from vehicle startup and shutdown
• Automatic-Shutdown: The device will automatically turn itself off to protect your battery from draining
• USB Charging Port:- Charge any consumer electronic device that can be charged via USB port.
• 150 degree Swivel Head: The cigarette lighter adapter is designed for universal placement in hard-to-reach areas.

I rated this inverter 5 stars because it charged what I wanted, and when I checked the ac output with a Kill A Watt Electricity Usage Monitor 120 to 121 volts displayed. Also 63.2 Hz to 63.3 Hz displayed when I check the frequency. I only connected items that consumed less than 100 watts. The inverter was tested with two different computers and a cell phone. I charged a 90 watt computer by itself on my 100 watt inverter. Then I unplugged the 90 watt computer. Then I plugged in and charged the 85 watt computer at the same time with my cell phone. Because all of my items charged, I recommend this product. Also the inverter I received looked a bit different. The inverter that arrived does not have the socket size adjuster. (The little switch that is on the part that goes into the cigarette lighter.) This is good because I didn't need it. My inverter fit in both of my cigarette lighter sockets perfectly! Also you can look at the CyberPower web site and see that this inverter has a 150 degree swivel head. I hear the fan in the inverter, but the sound is so low, I do not mind it at all. Also I only used this inverter while the vehicle is turned on and running. This inverter works great for me!

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Bought this at Wal*mart a few months back and at first it worked pretty well. Then it began cutting off and then back on again over and over which caused the computer to lose more charge than it was getting. The only way around this was to leave the car running the whole time it was in use.

A couple days ago it started making an awful noise when plugged in. The noise was more of an annoyance than anything until a burning smell came from it and smoke came out of the side air vents!

For the nearly $40 it cost to buy it I would say it is definitely NOT worth it (and it was a big mistake to throw the package and receipt out) since it lasted only about 3 months!

Edit: Just wanted to add that it also began blowing the fuse to the 12v accessory socket...

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The fan blows constantly and is very loud. It drowns out anything you are tryIng to hear. Otherwise it works great.

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I didn't keep it long enough to rate it durability or reliability for a car trip. Which was the intention. I need a simple little inverter for my 15 watts of DVD playing power needs and a little for my cell phone. Well it was working fine for the short time I used it. But within a minute the fan kicked on and it was the loudest fan I have heard in an inverter. So I returned it right away.

Sad too as I love my CyberPower UPS systems for my computers at home. So I was looking forward to trying an inverter under their brand labeling. Even though they likely didn't design the internals.

Other than the loud fan, for the short time I did have it, I liked the firm swivel joint as it held it's position great. No annoying lights. But at the same time a dimly lit LED would have been nice to know it is getting power and working. But the fan makes that painfully obvious.

I also could not find details on the packaging or unit about the amperage of the USB port. It did power and charge my Galaxy S3, but not sure how fast. So not sure it's enough for a 2W + tablet, etc.

Sadly I just couldn't accept the volume of the fan and returned it. 1 star = "I hate it" on the Amazon scale, and the ultra loud fan made me "hate it".

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I'm not to sure if this, is, the inverters fault or my car's but I will assume it is the inverter. First use it ran hot and got loud. After maybe 40 secs it tripped the cig lighter circuit and turned off.