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this post was submitted on 20 Jul 2024
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techsupport
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Whatever you do, buy one of those cables that tell you how many watts are going through. Sometimes on paper you did everything right but power delivery just won't work and this will help you blame the laptop or the charger.
How will it help determine if it's the power source or laptop?
I tend to buy chargers with multiple ports since I have several devices to power in the family. I noticed some charger ports behave different than others, and when having some devices charging others can't draw as much power as they need. Also not all chargers from my brand behave equally. So all my cables have indicator so I know my devices at least are putting in more charge than they're using..
Also, be aware that some USB-PD passthrough docks/devices will have enough resistance that it will drop the voltage lower than required for full speed charging. My laptop drops in to a lower power state when connected through a USB-C/PD passthrough dock because the mains voltage is lower than rated.