1970Maverick
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Have you tried plugging in a small lamp with a 50-75 watt incandescent bulb just to be sure your inverter works? If the light works , then your laptop is too much load. If it won't light a 50-75 watt bulb then the inverter has a problem.
This may/may not apply to you but different electrical loads present different profiles of current draw IE; a capacitive vs inductive vs resistive load. Typically small inverters are designed for computer type loads which are capacitive. A 150W inverter may power a 150 watt laptop but it won't power a 150 watt incandescent bulb, it would max out around 105 watt.
The only way to know what type of load you are plugging in is by using a scope and looking at the current/voltage wave forms. (I know most of us don't have a scope).
Another thing to keep in mind is if you replace it with a 350 watt inverter you will be drawing 30 amp from your 12 volt fuse vs 12.5 amps with the 150 watt inverter.
This may/may not apply to you but different electrical loads present different profiles of current draw IE; a capacitive vs inductive vs resistive load. Typically small inverters are designed for computer type loads which are capacitive. A 150W inverter may power a 150 watt laptop but it won't power a 150 watt incandescent bulb, it would max out around 105 watt.
The only way to know what type of load you are plugging in is by using a scope and looking at the current/voltage wave forms. (I know most of us don't have a scope).
Another thing to keep in mind is if you replace it with a 350 watt inverter you will be drawing 30 amp from your 12 volt fuse vs 12.5 amps with the 150 watt inverter.