The Flight I am taking has USB ports for power... how can I use it to charge my laptop?
Fresh3 days ago
Mar 15, 202613458 viewsConfidence Score0%
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Problem
Possible Duplicate: Charge a laptop via USB power (500mA)? I will fly to China in the next month which will take a mammoth 18 hour flight. The plane has USB power source on it. I know USB only has 5v and 0.5 amps output and laptop is 20v and 3.25amps. So 4 USB's would be short on the amps but suppl…
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Fix for: The Flight I am taking has USB ports for power... how can I use it to charge my laptop?
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First, if you got a transformer, you'd need more than 4 USB ports, as the power draw will be constant at 65W. As each USB provides 2.5W, you'd need at least 26 USB ports, and that's assuming that you have perfect efficiency in your transformer (whic…
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