Showing results for 
Search instead for 
Did you mean: 
Posts: 7
Registered: ‎08-01-2017
Location: CH
Views: 3,021
Message 1 of 4

X1 Carbon charge with big powerbank

I have a rather big powerbank that deivers 5V/12/19V. Can I use as a cable one of the type USB A - USB-C like the picture added. Thanks for a answer.

Token Ring
Posts: 164
Registered: ‎06-23-2011
Location: GB
Views: 2,926
Message 2 of 4

Re: X1 Carbon charge with big powerbank

Your powerbank sounds like it only has USB-A outputs on it - as far as I know USB-A will only output 5V so that wouldn't work when trying to charge the X1C. My guess is that the X1C would just see it like a USB device, not a charger ("PD").


Charging the X1C from a powerbank seems a little tricky as the powerbank needs to output 40W at 20V on USB-C.


I'm also a little cautious as that's a fair amount of power down a small cable so I'm hoping to hear from others who have had successful experiences. Strangely there are not that many comments online yet - whilst the X1C battery life is pretty reasonable there must be road warriors out there that need longer.

X1C5 May 17 | i7-7600U 16G 1TB LTE W10-1709 | USB3 dock + two 1080p displays, 25% on road
X220: i7, 16GB, m500 960GB, F5521gw
Posts: 7
Registered: ‎08-01-2017
Location: CH
Views: 2,912
Message 3 of 4

Re: X1 Carbon charge with big powerbank

Thanks for the answer!

Later I found out that my powerbank would deliver 12, 14 and 19V as well. But the output sockets ar far fom USB-C.

Maybe there is a solution from this outlet to USB-C?

Indeed I am very satisfied with the endurance of my X1C.

Like it!

Paper Tape
Posts: 3
Registered: ‎03-21-2018
Location: GB
Views: 2,446
Message 4 of 4

Re: X1 Carbon charge with big powerbank

Anyone has any experience with using this with the X1?: 


It's the Helper USB Type C 20000mAh 65W PD.


It says it has an output of 65W and 20V so i am guessing it should work. I am not an engineer or an electrician, so no clue.


Also, I know that we could get an official Lenovo 65W charger (over teh 45W) which fast charges. It smart enough to know when to stop. I wonder if this power bank would fry the laptop's battery? Or is it smart enough to know how much juice is too much juice just like the Lenovo 65W charger.



Check out current deals!

Shop current deals

Top Kudoed Authors