Pure Sine 400 Watt Power Inverter
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With 400 Watts of Pure Sine Wave power, you'll be able to run medical equipment and sensitive electronics without any operating issues.
Pure Sine Wave output for clean electrical current to ensure sensitive electronics operate properly
Highly efficient inverter, giving longer run times and extending battery life
Reliably handle your medical devices and electronics
Easily power up to 2 of your medical devices, electronics, or small appliances
Quickly charge your smartphones, tablets, or other mobile devices from the convenient USB-A and USB-C ports.
Built-in protection for Over Temperature, Reverse Polarity, Over Voltage, Low Voltage Alarm, and Low Voltage Cutoff.
Industry-leading 2 year warranty provides complete peace of mind
Monitor and charge devices with Fast Charge USB from anywhere inside your vehicle
Includes heavy-duty direct-to-battery cable and convenient 12V accessory cable
A 2-color LED indicator lets you know your power inverter status at all times
When you need safe and reliable portable power,nothing comes close to a Cobra
Designed to look and work great in your car, truck, RV, or semi
Included with every new Cobra PURE SINE 400W:
Find installation kits, chargers, and other accessories made to complement Cobra power products.
Take your knowledge to the next level. Get information and product support all in one convenient location.
Item # CPI400PSW
* Some packages may mistakenly list the Output Type as “Modified Sine Wave”. This is incorrect and should be Pure Sine Wave.
*Sold Separately
The fan does not run
This is normal. The fan will only run when needed, if the inverter starts to get hot.
The output voltage is low
The voltage from your inverter is a little different than the voltage in your home. The voltage in your home is called a “sine wave”, while the voltage from the inverter is a “modified sine wave”. Because of this difference, you will need a meter that measures “true RMS” voltage. If your meter does not measure “true RMS”, then it will read low.
If it does not say “true RMS” on the front of your meter, then it is not a true RMS meter and it will read low.
My outlet tester shows an open ground
Outlet testers are intended for testing normal utility power in your home. With normal utility power, the neutral and ground are connected together in your fuse box. Outlet testers are designed under this assumption.
The outlet on your power inverter, however, is not configured exactly the same as in your home. It is normal for an outlet tester to show an open ground. This does not indicate a problem with your inverter.
Does it matter where I mount my inverter?
Your power inverter is not weatherproof, so it needs to be installed where it will be protected from heat and moisture. Keep a minimum 1 inch clearance around the inverter for ventilation.
The inverter can be mounted in any position -- horizontal, vertical, or upside-down.
My inverter makes a squealing sound (alarm sound)
If the battery voltage gets too low, your inverter will sound a low-voltage alarm. This can happen for any of the following reasons:
-The battery is low and needs to be charged
-A loose connection with the battery cables
-A loose connection in the cigarette socket (if you are using a cigarette power cord)
-The battery cables to the inverter are too small
-The appliance is pulling excessive power from the battery
If you get low voltage alarm then try running the engine so that the alternator is supplying extra power. If you get the alarm even with the alternator running, then check all the cable connections. There might be a loose connection somewhere.
How much power can I draw from each AC outlet?
If your inverter has more than one AC outlet, the full inverter power is available from any of the outlets.
Overall rating: 4.428571 / 5 from 7 reviews.
Review topics: ["shipping"].
"Product was sold as new. It is not new. Sent multiple e-mails with no response. Cobra has always stood for quality but not anymore."
"Good quality, as advertised."
"Me llegaron Bien pero aún los he conectado, más adelante les comunico si funcionan como funcionan y si dan el resultado esperado, Gracias."
"This unit arrived quickly, works as should, and just what the doctor ordered."
"Great product works as advertised. Excellent service. Called the company and got a great price and lead time."
"Fast delivery. Talked with support to make sure I could use it for my cordless tools charger. Although I haven't used it yet, I bought from Cobra because they sell quality. I am sure it will work fine."
"Doing great!!"
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