Question about NexxTech 175W Power Inverter

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I bought a Nexxtech 175 watt inverter to power my laptop. It worked fine in my truck in the store parking lot but won't work in my tractor where I really need it. It works from the power point or the battery in the truck with or without the engine running. It won't work anywhere on the tractor. Input voltages are within half a volt or less between the 2 vehicles, and all between 11.6 and 14.2 volts. Output voltage from the inverter in the truck is 108 volts, which runs the laptop; 85 volts in the tractor, which will not. Why the difference? What's the solution?

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It could be any of a number of things, but the first 2 guesses I am going to make are:
1) The contacts in the cigarette lighter jack in the tractor are corroded; or
2) the wires that power the cigarette lighter jack in the tractor are too small of a gauge to provide enough current flow without a voltage drop. This one can be tested by popping the cigarette lighter jack out of the dashboard while still wired (carefully, you don't want to cause a short-circuit), and then plugging in the inverter and measuring the voltage with a multimeter going INTO the lighter jack. It should be at least 11.5, preferably 12, Volts. Test both before and after the inverter is plugged in. If the after reading drops too much, then you know you need a bigger gauge wire feeding the lighter jack.

Posted on Jul 24, 2014

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SOURCE: I HAVE USED THE NEXXTECH 175 WATT POWER INVERTER

have you charged it,and check if the battery is still ion good condition

Posted on Feb 26, 2010

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