- Converts 12-volt DC power from a vehicle battery to 120-volt AC power. Simply plug the inverter into your vehicle's DC outlet, and connect your device to the inverter's AC outlet or USB port.providing on-the-go household power in the vehicle.
- Ipad, Iphone compatible. USB upgraded from one USB port 1A to Dual USB port: DC5V,3.1A in all. Save your charge time. one is 1A, the other is 2.1A special for iPad.
- Short circuit,overload,overheat,low battery voltage,over battery voltage Protections, full protection features keep your appliance and car from damage.
- High tech achieved: Input & Output Isolation avoid electric shock ! Built-in fuse & cooling fan. Resum working after protections.
- For DC12V and Car ONLY, not applied for DC24V and airplane use !
This inverter produces a square wave AC output, which is unsuitable for inductive loads such as fluorescent lights or computer notebook power supplies or for motors, instead of the nice sinusoidal AC output of normal mains power. It should work for resistive loads like incandescent lights, although those are higher power and are being phased out now.
Even if at this price point one has to expect it, the user should be aware of this significant limitation. When connected to even low power fluorescent lights or computer notebook power supplies, the inverter does not power the device and its indicator LED switches from green to blinking red. The USB DC output was sufficient to power devices such as USB lights however.
The plastic face on one side of the inverter was cracked inside or otherwise not firmly attached to the body so that side pulls out a few millimeters when an AC plug is removed. One therefore has to hold the face in place to avoid separating or breaking it further.
The end that plugs into the car power port is short enough and the face/body large enough that it may not fit in some cars without a wired extender because the large body may be physically blocked by the plastics in the car console.
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Looked for a power inverter for my daughter so her children can watch videos on the long trip. Charges the laptop and phone just fine. Works as advertised. Doesn't get hot.
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I got this as part of my emergency kit, just to have more power options in the event of a power failure, like we had in Sandy. I have not tried this in "anger" yet, no need has come up, but I did take a nearly dead BlackBerry, Kindle HD, a smart phone and it charged them all perfectly (I did them one at a time.)
Summary:
I took off a couple of points for the sloppy AC wave form and the idle current use, but would recommend to a friend with the above caveats, and would personally buy again knowing what I know now, after all it does work well for what I wanted. While potentially annoying to someone using this in the car stopped for a long time, the fan running all of the time is actually a good thing for the life of the product, parts will run real hot under a full load and cooling them properly will help prevent failures.
As a rule of thumb always get 2 times the wattage / mA your device actually needs, these run best at 50% load and that also allows plenty of headroom for occaision usage spikes from your device. (Plus I think the ratings are on the "optimistic" side, attained only with an ideal load under ideal circumstances, so not a lie, just not likely your experience.)
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PROS:
Will USB charge most phones and tablets.
115VAC -Suitable for the uses I had, phone wall wart
DC Output (USB) very clean and obviously just going straight through a regulator, nicely done, no introduced ripple at all (means same as battery itself) -Also no change in voltage with load change, held rock solid, again, just like a battery would (did)
Form Factor, small, easy to use, just toss in glove box
Dual USB port to charge two small devices at once, tried my BB and smart phone at the same time
Reasonable Fan Noise while car is in motion (count on it being on all the time, no matter what the load)
CONS:
Very Ugly 110VAC Waveform -This is likely to not work on anything but older non-switching style wall warts, and very well built new ones, you will want to try this before needing it. If your wall wart is 2" square or larger it is likely an older style one and will work fine, if it is a itty-bitty one (technical term :) then it may not work, my BlackBerry one worked fine and it is clearly a new style switching wall wart, but it is a very expensive one (well built). To be fair it should be noted that all small static inverters work this way, but I suspect some do a better job than this unit, the only thing is you'll pay a lot more for a "true sine" wave inverter and likely not need it.
Draws 220mA just plugged in, most of this is the fan. This is only an issue if you had intended on leaving it plugged in all the time.
While the fan was not bad I would not want to be stopped in the car for a long time using it, but on the road, on the move at about 35MPH I could not hear it at all.
Form Factor is also a pro and con, on the con side is where you need to plug it in, as an all-in-one unit, make sure you have enough room around your lighter / accessory plug for this to fit. If that is an issue there are other unit available with a cord or you can buy the lighter extension cord for a few bucks here and solve the problem, much smaller plug, and much deeper socket so it stays in better.
Video:
This is shows the Bestek version of a 110VAC sine wave and a view of a real sine wave from the wall (utility power). Looks a little rough and easy to see why it might bother power supplies that can't easily smooth this out, such as inexpensive switching supplies. (Non-geeks, this is not as bad as it looks, as noted all inexpensive static inverters are going to look about like this)
Specs as measued by me:
Idle Current Draw about 1/4 Amp (220 mA)@ 13.5DVC
AC voltage varied from 110.08VAC @ 12VDC exactly, 112.84VAC at 13.5VDC so it moves around with input voltage.
AC votage also varied on load, from a base of 112.84 VAC at no load, to 107.17 VAC at 120W, at 75W it was 110.26 VAC
Frequency varied from 59.774Hz 61.032 but a 10 minute average came in at 60.044Hz (75W load)
DC ripple was not measurable on anything I own, essentially 0 any load
DC Voltage 5.04VDC, like a rock
BTW -The 300W version of the Bestek waveform looks exactly the same, so same design just beefier parts for more power.
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This is a very wonderful product with very reasonable price. I use the adapter to power my laptop when on road. It is very quiet, and works very well. I no longer need to worry about running out of battery. The product was shipped quickly and very well packaged. Pretty satisfied with the seller's service. Job well done.
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Mine arrived fast and has a red body. I like the sturdy one-piece design.
This 150W unit has passed all the tests I threw at it so far, for charging USB devices and running small devices requiring 110VAC. NOTE: Because 150W can draw over 10A, I have upgraded my under-dash fuses to 20A.
The box it was shipped in is close-fitting, and makes a great carrying case.
For the price I was expecting something noisy or ineffective, not the case. This is a wonderful product at a very nice price. I will recommend to friends!
