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5 Posts

12-30-2013

CA

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X1 Carbon (Gen 1) 3443CTO AC Adapter Power Issue

2019-11-30, 4:36 AM

The problem:

 

When unplugging the AC Adapter, the power goes off to the X1 immediately. It runs fine with the AC adapter plugged in to the laptop and the wall. Running Windows 10. The battery charges and holds a charge.

 

The battery reports as 100% full and the battery icon shows that the laptop is plugged in when it is.

I've run a Lenovo Diagnostics Test and the battery reports the following:

 

UDI: SBAT

INDEX: 0

NAME: 45N1071

CHEMISTRY: Lithium-ion

TEMP: 27.25 deg C

MANUFACTURER: SANYO

Design Voltage: 14.8 Volts

S/N:

Design Capacity: 47.36 Wh (3200mAh)

Full charge capacity: 41.18 Wh (2782mAh)

Cycle Count: 144

Driver version: 10.0.18362.1 [Windows]

 

11/29/2019 (time) Battery Health Test

11/29/2019 (time) Message: Total Battery Charge 100%

 

Result Code: WBA0000900000-WOTWAN - Passed (0s)

 

Attempted solutions:

I've tried unplugging the battery and the adapter, pressing the power button for 20 seconds, as suggested online: No difference made.

I've updated my BIOS

I've got the latest Windows 10 updates.

 

Note: The battery is not the original, but it has been around for over a year with no problems, and is only 144 cycles in (they are usually rated for about 500 cycles).

 

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11598 Posts

01-02-2010

US

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Re: X1 Carbon (Gen 1) 3443CTO AC Adapter Power Issue

2019-11-30, 7:06 AM

There is a matrix of power transistors that night have failed. There is a fuse for powering the laptop that is separate from the fuse for charging.  It might just be the battery. Circuit diagrams are not available so without parts to swap, it is difficult to diagnose.


Rich


I do not respond to requests for private, one-on-one help. Your questions should be posted in the appropriate forum where they may help others as well.

If a response answers your question, please mark it as the accepted solution.

I am not an employee or agent of Lenovo.
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5 Posts

12-30-2013

CA

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70 Page Views

  • Posts: 5
  • Registered: ‎12-30-2013
  • Location: CA
  • Views: 70
  • Message 3 of 3

Re: X1 Carbon (Gen 1) 3443CTO AC Adapter Power Issue

2019-11-30, 15:34 PM

@richk 

Thanks for the reply and insight. I was afraid it was something like that - transistors or fuses that I'm unable to personally diagnose and fix. The battery costs about $80 which isn't horrible. New (or Newish) X1 Carbon (Gen 1 to 3) laptops can be found for $600 with some searching. I've been playing with Windows power settings to no avail and doing my best to troubleshoot and diagnose the issue, but this seems elusive. And the last time the battery went, it simply wouldn't keep a charge for long and I'd have to plug-in.

 

This feels like a different problem unfortunately. I'll try buying the battery and keep an eye on these boards. If the new battery does the job, I'll post here to let folks know.

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