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2 Posts

03-08-2019

US

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2019 X1 Carbon EXTREME, wont charge over USB C

2019-03-08, 21:56 PM

Hi guys,

 

So i have upgarded to the X1 Extreme from my 6th Gen X1 Carbon. One thing i did not consider was the 135W charger vs 65w USB c charger that you get on the X1 6G.

 

Problem i have is when i fly long haul the normal max wattage of plane seats is 90W. I took an 86W Apple USB C charger with me recently (that i know works on that plane on my old 15" USBC MBP) and this didnt work on the X1. Not any sign of even being plugged in but not charging.

 

Is there a BIOS setting maybe to not allow USB C Charging. Could this be the case??

 

Thanks 

 

 

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6 Posts

03-12-2019

RU

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Re: 2019 X1 Carbon EXTREME, wont charge over USB C

2019-03-23, 14:34 PM

That is an interesting question.

I use a 60W USB-C charger for my P1 and it works. Although, it is *glitchy*. I use the port closest to the normal charging port. Sometimes I have to re-insert it. Tthe small white light has to turn on.

Also, I was using my Deppa power bank and it was perfectly OK before I updated the BIOS to 1.19. Now, it gives me three blinks, but it does not work anymore.

My Deppa is Type-C: DC 5V/3A, 9V/3A, 12V/3A, 14.5V/3A, 20V/2.25A (45W max).

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25 Posts

06-20-2010

US

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Re: 2019 X1 Carbon EXTREME, wont charge over USB C

2019-03-23, 22:52 PM

In Lenovo Vantage, there should be an option for in-seat power mode which will limit the charge rate to avoid overloading the airplane power outlet:

https://support.lenovo.com/us/en/solutions/ht062667

 

Regarding USB-C, the X1 Extreme can definitely charge from the Apple 87W USB-C Power Adapter - I have personally tested this.

 

Keep in mind that the 90W in-seat power limit applies to the input to the power adapter, not the output. Power adapters aren't 100% efficient; my guess for the Apple 87W adapter would be around 85-90% at full load. If your ThinkPad X1 Extreme is using the full 87W, the input power to the Apple 87W adapter could be ~100W, which might be too much.

 

If you're not using the dedicated graphics, 60W should be more than enough to power and charge the X1 Extreme, though you might charge slowly sometimes. The most that the X1 Extreme will generally draw continuously is 90-100W, so even with games a 90W should be (barely) enough. If you want to be able to fully load the laptop and charge at the same time, though, the 135W is what you want.

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