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Black rectangular 135W AC adapter with 10 ft cable

WAWEIS

WAWEIS 135W AC adapter for Lenovo ThinkPad Y40 Y50 Y70

SKU CH-Q1MS-28J5H

A 135W replacement charger with 10 ft cable and over-voltage protection for ThinkPad Y40, Y50 and Y70 models

  • World-wide 100-240 VAC input suits travel anywhere
  • 135 W output powers ThinkPad Y40, Y50 and Y70 models
  • 10 ft total cord length gives flexible desk placement
  • Multiple safety protections guard against over-current, over-voltage and short circuits
  • FCC, CE and RoHS certifications confirm regulated quality standards

Compatible Lenovo ThinkPad Models

This 135W AC adapter replaces the original power supply for Lenovo ThinkPad Y40, Y50 and Y70 laptops. It matches the 4X20E50558 specification and delivers the correct voltage for daily charging and operation. The unit is built from new components and certified to FCC, CE and RoHS standards.

Behaviour Under Sustained Load

The adapter accepts a wide 100-240VAC input at 50/60Hz, so it maintains stable output across different mains supplies worldwide. Over current, over voltage, short circuit and total power protection circuits engage automatically during prolonged use. A smart chip monitors temperature and prevents overheating during extended charging sessions.

Thermals Noise And Power Draw

The power cord measures 10 ft in total length, giving flexible placement without extra extension leads. Isolation materials reduce electrical interference while the unit runs silently with no moving parts. Overload protection and anti-interference features keep power delivery clean and safe for the connected laptop.

Highlights

  • World-wide 100-240 VAC input suits travel anywhere
  • 135 W output powers ThinkPad Y40, Y50 and Y70 models
  • 10 ft total cord length gives flexible desk placement
  • Multiple safety protections guard against over-current, over-voltage and short circuits
  • FCC, CE and RoHS certifications confirm regulated quality standards

Specifications

No published specifications for this item yet.

Questions about this item

How much heat or noise does the 135W adapter produce when it runs continuously?

The unit has no fan, so it operates silently; warmth is limited to the brick itself thanks to over-current, over-voltage and short-circuit safeguards.

Which connector must my ThinkPad already have for this charger to fit?

It plugs into the standard rectangular 20 V port used by the Y40, Y50 and Y70 models.

Will the 10 ft cord reach a floor outlet while the laptop stays on a desk with older peripherals attached?

Yes, the 10 ft total length gives enough slack for that setup without pulling on connected devices.

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