What's Difference Between 5A Cable and 3A Cable (PD Protocol)

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Introduction
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From 5W to 240W, we find the charging speed of electronic devices is faster and faster. But it's not easy for us to get the proper cable.
Even though the appearance looks similar, the performance is completely different.
For example, the charging cable can be divided into 5A (100W) and 3A (60W).
So, today, we gonna talk about what's the difference between them.

Chapter
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0:00 Intro
1:20 3A cable
1:44 5A cable
2:31 Q&A
4:14 Summary

Correction: 3:22 voltage drop, not pressure drop.

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SOCIALS:

[Chris-evcp]

Hey I know this won't likely be seen by you, but you've been doing an incredible job with this channel and I thank you for your hard work going over these chargers and power standards!

[snowdaysrule]

I bought a cheap 2M 5A PD usb-c cable and the manufacturer cheated and put a 5A emark chip in a thinner 3A cable and devices attempt to charge over 3A but fail due to the electrical properties of the cable being wrong. I left a review of the cable on Amazon alerting people to the fraud and Amazon deleted my review a few weeks after I posted it saying I was mistaken and the manufacturer was honest. I tested the cable with a cable tester it doesn't lie but Amazon doesn't care! I promptly cancelled my prime membership in response.

[PavelShevchuk]

Can you please make a video explaining why some cheap devices with USB-C can only be charged via USB-A to USB-C cable, but not USB-C to USB-C cable? Now i have two of these (hair trimmer and helmet intercom) and i guess device manufacturer didn't include a chip that does PD negotiation, but would be interested in a more in-depth review of this issue. Thanks!

[dogukancil]

Some devices using the Usb-c connector but not the PD protocol will not charge with a cable containing an e-marker chip as there is no voltage on the cable before the initial 5v negotiation. Vape pens are great examples of these, as these small devices rarely have spare room for PD circuitry.

[PSM-IPADZ_OX]

Another great educational video ChargerLab and thanks. Great info about the amperage of the E-marker chip. However, it’s sad that a lot of producers of charging cables don’t put the specifications on their product labels so we are unable to determine the real life charging wattage unless we buy the cable and also a USB measuring device like that sold by your company. Higher price cables don’t necessarily guaranteed faster charging time or higher charging wattage. And we cannot cut our cables too. In the end, we can only get an assurance if we buy cables of any sort from reputable manufacturers. Or to keep following your fantastic video tear downs of chargers and cables ……. Keep up the good work …. Thumbs up 👍🏼

[norules]

What about 6A and 10A cable ? Like OnePlus iqoo cables. Whats the difference between these . And why most after market type c cable limits at 5A . I have tried my OnePlus device it charges at 5A only with 100w after market cable . But with OnePlus cable it charges upto 8A.

[AndrejaKostic]

What about the new 240 W cables? Are there any major differences between them, and the older 5 A cables, other than data in the marker chip?

[quakerwildcat]

Great stuff. Thank you for being clear AND quick.

[Perplexer]

Those images showing max. charging speed of those devices over USB-C to Lightning cable are really great. Hard to find that info anywhere.

[RMello]

Your video really helped me figure it out which cable I should buy. Thank you so much.

[KGKraetzerMedia]

Info I needed, what is best cable for data transfer.

[sirajkuttilanji]

I need an urgent reply I have both 45W and 65 W adapter. Both charge my Samsung S24 Ultra with Super fast charging 2.0 (5A W adapter came with My Laptop Book 4 but when I charge the cable along with this adapter cannot charge my phone with 2.0 charging, that means that cable is not all the time I need to carry 65 W adapter and both cables with My question is can I replace original Laptop cable with my 5A mobile 45W adapter cable? By doing this cause any damage to my Laptop?

[VVarun]

Does thunderbolt 3 cable guaranteed to deliver 100w?

[arianamirgholami]

One interesting thing is noticed between my 5A and 3A cables is that my phone (mi11ultra) with mi65watt gan charger doesn't charge with more than 27 watts so 8-9v 3A but with a 5A cable it goes to 45 watts so 9V 5A which makes sense but I wanted to point out that not all devices uses that 20V and are more limited but can benefit from higher amperage

[Xyrium]

The USB industry as a whole is pretty sad. Some proper required labeling enforcement would be amazing. There's no way to pass additional current through wire without increasing it's diameter. I would imagine that if you can't measure the diameter, it would be measurable through resistance, with the same length cable having lower resistance with larger diameter conductors. Thanks for presenting this!

[ehsan]

could you also talk about cables which support 240W charging? I want to buy a 250W power bank and like to know which USB-C cables matches the best with it. Thank you

[DharkBizkit]

problem is: they claim to deliver X and Y but dont deliver it in the end, when it comes to usb cables you can buy.

[MikeTrieu]

"larger pressure drop"

"Voltage", surely.

[ErnieSesameStreet]

Do you sell the USB-C cable? What is the difference inside the cable for difference transfer speed? Thank you

[rifaiamir]

very informative, you have a great content thank you!