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Title: Performance doesn't meet specs
Review: I purchased this inverter because the performance specs were 150 watt continuous and 300 watts peak. I was attempting to run a 120 watt laptop. The inverter worked for about 1 1/2 hours on a plane when the laptop was in power saving mode (~90 watts). I then plugged it into my car to test if it would handle 120 watts by pushing on the graphics card. It would not. The inverter switches off and on causing the laptops power management to have serious problems. Towards the end of the car test (~30 minutes) it would no longer recharge the laptop battery and was starting to make a horrible noise. Prior to this purchase I tested a Duracell 813-0291-07 175 Watt DC to AC Pocket Power Source Inverter which wouldn't handle the laptop on a plane (in any mode) but would in the car. I'm I am ready to give up on inverters for a while.From a design perspective the Cobra is nicer than the Duracell.
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