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Black rectangular power brick with 7.9mm center-pin connector and long cable

WAWEIS

WAWEIS 170W AC/DC Adapter for Lenovo ThinkPad 42T5284 42T5285 7.9mm Center Pin

SKU CH-KZRZ-AW84H

170W AC/DC adapter compatible with Lenovo ThinkPad models 42T5284 and 42T5285, featuring 7.9mm centre pin, 10ft cord, and FCC, CE, RoHS certifications

  • World-wide 100–240 V input suits travel
  • 170 W output powers demanding ThinkPad models
  • 9 mm centre-pin connector fits 42T5284 and 42T5285
  • 10 ft total cord length gives flexible placement
  • FCC, CE and RoHS certified with multiple safety protections

170W AC/DC Adapter for ThinkPad

This 170W AC/DC adapter replaces Lenovo part numbers 42T5284 and 42T5285 with a 7.9mm centre-pin connector. It delivers worldwide input from 100 to 240VAC at 50 or 60Hz and includes a total cord length of 10 ft. Built-in protections cover over-current, over-voltage, short-circuit and total-power events. FCC, CE and RoHS certifications confirm compliance.

Replaces original 170W ThinkPad charger

The unit is a direct replacement for the factory-supplied 170W adapter used with compatible ThinkPad models. It matches the original voltage and connector specification so the laptop charges at the same rate. The jump is worth it when the original brick is lost, damaged or no longer holds a secure connection. No modification or additional cable is required for installation.

Sustained load with smart-chip thermal control

Under continuous load the adapter relies on a smart chip to manage overheating protection and maintain stable output. Overload protection and high-quality wiring limit heat rise during extended charging sessions. Anti-interference materials and isolation keep output clean over long periods. Safety circuits engage automatically if temperature or current exceeds design limits.

Highlights

  • World-wide 100–240 V input suits travel
  • 170 W output powers demanding ThinkPad models
  • 9 mm centre-pin connector fits 42T5284 and 42T5285
  • 10 ft total cord length gives flexible placement
  • FCC, CE and RoHS certified with multiple safety protections

Specifications

No published specifications for this item yet.

Questions about this item

What plug size and centre-pin diameter does this adapter use?

It uses a 7.9 mm barrel plug with a centre pin that matches the original ThinkPad 42T5284 and 42T5285 chargers.

How do I connect the 10 ft cord correctly and what step is often missed?

Plug the IEC end into the brick, the barrel into the laptop, then the mains plug into a 100-240 VAC outlet; the step often missed is seating the barrel fully until the centre pin clicks.

When should I replace the power cord or the adapter itself?

Replace the cord if the insulation cracks or the IEC connector loosens; replace the whole unit if the brick overheats, whines, or the over-voltage, over-current or short-circuit protections trip repeatedly.

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