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Black rectangular AC adapter with attached 10 ft power cord and laptop connector

WAWEIS

WAWEIS AC/DC Adapter for Lenovo ThinkPad W540/i7-4700MQ laptop battery

SKU CH-0QMA-ZYNSC

A new AC adapter compatible with the Lenovo ThinkPad W540 and i7-4700MQ, offering 100-240V worldwide input, a 10 ft cord, and FCC, CE, RoHS certifications

  • World-wide 100-240 V input works anywhere
  • 10 ft power cord gives extra reach
  • Multiple safety protections guard the laptop
  • FCC, CE and RoHS certifications confirm compliance
  • 100 % OEM compatible with ThinkPad W540

AC Adapter for ThinkPad W540

This AC adapter replaces the original power supply for Lenovo ThinkPad W540 laptops equipped with the i7-4700MQ processor. It accepts a worldwide input range of 100-240VAC at 50/60Hz, making it suitable for international travel. The unit is built with new components and carries FCC, CE and RoHS certifications.

10 Ft Power Cord Included

A 10 ft mains cord is integrated with the adapter, giving extra reach between the wall outlet and the laptop. The cable uses high-quality wires and isolation materials to reduce interference. Safety circuitry provides over-current, over-voltage, short-circuit and overload protection during operation.

Check Connector and Voltage Match

Verify that the DC output connector and voltage rating match the original ThinkPad W540 charger before ordering. The adapter is designed for 100% OEM compatibility with the specified model only. Buyers needing a different connector type or a higher wattage unit for another laptop should look elsewhere.

Highlights

  • World-wide 100-240 V input works anywhere
  • 10 ft power cord gives extra reach
  • Multiple safety protections guard the laptop
  • FCC, CE and RoHS certifications confirm compliance
  • 100 % OEM compatible with ThinkPad W540

Specifications

No published specifications for this item yet.

Questions about this item

How often will the AC adapter cable need replacing under normal use?

The adapter includes a 10 ft power cord built to high quality standards with overload and short-circuit protection, so the cable itself is not a regular replacement item.

What is the first limit reached when the adapter runs continuously at full load?

The unit is rated for worldwide 100-240 VAC input at 50/60 Hz and incorporates over-current, over-voltage and total-power protection that will trip before the adapter overheats.

How much heat and fan noise does the charger produce during all-day operation?

The adapter has no fan; it relies on passive cooling and a smart chip for overheating protection, so it runs silently and stays within safe temperatures under continuous use.

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