After having some issues with a modified sine wave inverter, I decided to give this pure sine wave inverter a try. I was a bit leery, given the low price relative to other pure sine inverters and the total absence of online reviews at the time, but a youtube video I stumbled across (OF2M5i6F8) showed this inverter's output on an oscilloscope. It was indeed a sinusoid, so I promptly ordered one. Attached to my car's battery with the car running, the unit held up under a sustained 1580W total *rated* load (edit: my Kill-a-Watt power meter showed only 530W of *true* load) with no hesitation, alarms or shutdowns. All attached devices (including fans, refrigerator, network gear and phones) functioned flawlessly with no buzzing or other oddities.
Note that the unit comes with no cables (Cobra CPI-A4000BC 4-AWG Heavy-Duty AC Power Inverter Cable Kit, available from Amazon for $30), and the instructions are nowhere near as thorough as those of most other inverters. The two 12V attachment points are also quite close to each other, are bare metal, and protrude significantly, making it quite easy to short-circuit them, especially on a job site (I recommend installing a 200A ANL fuse install a high amp lighted switch on the dash from some local Autozone or Radio Shack. Lighted to help remind her if it was left on.
The laser printer requires a pure sine wave and this inverter provided a good solid 1300 watts to various appliances. The laser printer alone only pulled 800 watts max. Leave laptops and mobile phones on lighter outlet plugs, that way you reduce the amount of time the inverter is turned on...and the likeliness that it will be forgotten turned on.
The only improvement would be to have chosen an inverter with a digital display that would let me know the load and operational status onboard.
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I bought this inverter for my truck camper because I don't have an air-conditioner and I don't have room for a generator. I thought getting a "pure sine wave" inverter would mean it works with everything. This inverter had a great price so i picked it over a few others. I have used this inverter for a couple of months and have noticed two things. One is that my iphones and ipads do not charge from the inverter which was a big surprise. And the other is that the 3 cooling fans are already going bad. I'm guessing they are the cheap bushing built fan instead of ball bearing. So now I'll have to un-mount my inverter from the camper and pull it apart to either oil or replace all three fans. Winter project.
The inverter did work good at running my two-way norcold fridge on a 3,000 mile trip. It also works great with my 950 watt output microwave. My laptop charges with no problem either. So overall i'm happy with the way it works, but a little disappointed with the quality of the fans. Not sure why iphone won't charge, so now i'm questioning the "pure sine wave". And the manual is more or less a waste of paper. It doesn't contain very much information.
I wouldn't discourage anyone from buying this inverter, but you may have to perform maintenance on it. So keep that in mind. And also be aware that it needs lots of power. I had to bridge my truck battery and the camper battery to get 15 minutes of run time with my microwave. It's a great setup but more advanced than most are capable of.
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I use these inverters for my business. I have two of them one for three years and another for two years. Both of them still work like new, and I have never had an issue running my tools off them even tools with variable speed triggers that require pure sine wave. They will even run my 1100 degree heat gun. Make sure you have good wire to feed power (like pure copper 0 gauge) and it will never let you down. My only beef I did have to replace the cooling fans on one after a year or so, and it seems to create issues with anything plugged into it that has a touchpad/touchscreen (such as laptop, iphone/ipad) Never ruined anything, just the touch doesnt work properly while plugged in. I would recommend this inverter to anyone.
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Ok, After 2 days of running #2 wire and installing breakers and disc, I wanted to test this bad boy out. It ran anything i would through at it. Ran my hole camper 68 amps on the 12v side. So I turned off my coffee maker,TV, changers and what ever was running. I turned on microwave and the invert stopped and alarms went off. I reset it and it did it again. I was drawing 62 amps around 650 watts. Still nothing. I tried it at 1/2 power and still popped. Any way its just how most microwaves are they will not run off inverters. If you need a work horse this inverter is great. It runs just about anything I would put on it. 1100 watt coffee maker ran no problem. TV,bluray,directv worked great.
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I really wanted to like this device. It appeared rugged and well built. Unfortunately the unit would not charge an ipad or iPhone which is a deal breaker. The kill-o-watt meter said that the frequency was 59 to 60 hz. The power was fine, what could have been the problem? Nothing else was on the same circuit. i have four trojan T-105's. The ipad not only stopped charging but it also stopped working. It froze, and when turned off then back on would not except my password. After disconnecting the charger it worked normally. Had I continued to use it it may have destroyed it. I purchased the Xantrex Pro Sine 2000 and everything worked just fine. The seller and Amazon were great. I returned the unit immediately and got a full refund in 2 days.
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