How much power does an inverter use?
In our Casita travel trailer, I have one 12V outlet. I have two inexpensive inverters (Walmart) that plug into the 12V outlet: one inverter is 100W, the other 400W. My laptop needs 90W to charge. ...
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The situation is even worse than described. Your laptop runs on dc battery power so you are losing efficiency by inverting to A/C current and then the laptop needs to convert that to dc of the correct voltage. Both processes lose efficiency.
A better solution is to use a "car" charger without the need to invert the current. With a bit of checking you should find this for your laptop. I do the same for other charging when possible. That includes items such as charging camera batteries.
Actually I am surprised that an inverter is over 80% efficient. Even small ones put out a lot of heat and have built in cooling fans.
A better solution is to use a "car" charger without the need to invert the current. With a bit of checking you should find this for your laptop. I do the same for other charging when possible. That includes items such as charging camera batteries.
Actually I am surprised that an inverter is over 80% efficient. Even small ones put out a lot of heat and have built in cooling fans.
