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Black rectangular Lenovo 90W USB-C power adapter with three-pin plug

Lenovo

Lenovo ThinkPad X1 90W USB-C AC Adapter PA-1900-72

SKU CH-PN82-Q1XH3

Original Lenovo 90W USB-C power adapter for ThinkPad X1 Carbon ultrabooks

  • Original Lenovo 90W charger ensures reliable power delivery
  • 20V 4.5A output matches ThinkPad X1 Carbon specifications
  • USB-C tip fits compatible ultrabooks without extra cables
  • 100-240V input supports worldwide mains voltages
  • Replaces multiple Lenovo part numbers for broad compatibility

Genuine Lenovo 90W USB-C Adapter

This original Lenovo power adapter delivers 20 volts at 4.5 amps for a total of 90 watts through a USB-C connector. It replaces a long list of Lenovo part numbers including 45N0236, 45N0237, 45N0238, 45N0239 and the 0B46994 series. The unit accepts a worldwide 100 to 240 volt input at 50 or 60 hertz.

For ThinkPad X1 Carbon owners needing a replacement

It suits owners of the listed ThinkPad X1 Carbon ultrabooks such as the 344428U, 344425U and N3N25UK models who want a genuine Lenovo charger. Buyers with laptops that require a different voltage, a higher wattage or a barrel-style tip should look at other adapters. The USB-C tip will not fit older rectangular or round connectors.

Deciding spec: 90W USB-C 20V 4.5A output

The single specification that decides fit is the 20 volt 4.5 amp USB-C output rated at 90 watts. Match this voltage, current and connector type against your laptop's requirements before ordering. The adapter also supports 100 to 240 volt AC input for international use.

Highlights

  • Original Lenovo 90W charger ensures reliable power delivery
  • 20V 4.5A output matches ThinkPad X1 Carbon specifications
  • USB-C tip fits compatible ultrabooks without extra cables
  • 100-240V input supports worldwide mains voltages
  • Replaces multiple Lenovo part numbers for broad compatibility

Specifications

No published specifications for this item yet.

Questions about this item

Does the PA-1900-72 need a separate mains lead or is the three-pin plug built into the brick?

The adapter has a fixed three-pin input connector rated for 100-240 V at 1.5 A, so no separate mains cable is required.

What is the most common mistake when connecting the USB-C tip to a ThinkPad X1 Carbon?

The USB-C plug must be pushed in until it clicks; a partial insertion will not deliver the full 20 V 4.5 A output and the laptop will not charge.

Which part numbers does the PA-1900-72 replace if the original charger fails?

It replaces Lenovo part numbers 45N0236 through 45N0239 and 0B46994 through 0B47009, covering all listed ThinkPad X1 Carbon models.

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