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Rectangular black AC adapter brick with 6 ft cords, 170W 20V 8.5A output

iTekiro

iTekiro AC Adapter for Lenovo ThinkPad P51 170W

SKU CH-8AM6-C05NV

Replacement 170W 20V 8.5A AC adapter for Lenovo ThinkPad P51 with 6 ft cords and overload protection

  • TypeAC Adapter
  • Battery TypeLithium-Ion
  • AC Adapter Voltage20V
  • AC Adapter Current8.5A
  • AC Adapter Output Power170W
  • Delivers 170W to power demanding ThinkPad P51 workloads
  • 20V 8.5A output matches original Lenovo 170W adapter specifications
  • 6 ft AC plus 6 ft DC cords give 12 ft total reach
  • Built-in overload, short-circuit and over-voltage protections guard hardware
  • Worldwide 100–240V input works across regions without a converter

Replacement 170W AC Adapter

This 170W AC adapter replaces the original Lenovo 135W and 170W chargers for ThinkPad P51 models. It is built for users who need a direct power substitute without changing the laptop's existing connector or voltage requirements. The unit ships new and includes both a 6 ft AC cord and a 6 ft DC cord.

Sustained 20V 8.5A Output

Under continuous load the adapter maintains a steady 20V at 8.5A, delivering the full 170W rated output rather than a short-term peak. Internal protections guard against overload, short circuit, over-voltage, over-current and over-temperature during extended charging sessions. The input range of 100 to 240V at 50 to 60Hz allows worldwide operation without a separate voltage selector.

Not a 230W or 300W Substitute

This adapter does not replace Lenovo 230W or 300W chargers, so systems that require those higher-wattage units will not charge correctly. Buyers who need more power for larger workstations or dual-GPU configurations must source the appropriate higher-rated supply instead.

Highlights

  • Delivers 170W to power demanding ThinkPad P51 workloads
  • 20V 8.5A output matches original Lenovo 170W adapter specifications
  • 6 ft AC plus 6 ft DC cords give 12 ft total reach
  • Built-in overload, short-circuit and over-voltage protections guard hardware
  • Worldwide 100–240V input works across regions without a converter

Specifications

TypeAC Adapter
Battery TypeLithium-Ion
AC Adapter Voltage20V
AC Adapter Current8.5A
AC Adapter Output Power170W

Questions about this item

How much heat or noise does the 170W adapter produce when running all day?

The adapter has no moving parts, so it runs silently; normal warmth is expected during continuous use.

What must I already own for this 20V 8.5A unit to work with my ThinkPad P51?

You need a matching ThinkPad P51 model from the supported 20HH series and a standard wall outlet.

Will this 170W charger work alongside the older 135W Lenovo brick I still have?

Yes, it replaces the original 135W and 170W adapters but does not replace 230W or 300W chargers.

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