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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

  • Battery typeLithium-Ion
  • Power adapter voltage20 V
  • Power adapter current8.5A
  • Power adapter wattage170 W
  • Product typeAC Adapter
  • 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.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $59.99
Pricier than about 89% of the 27,790 comparable items (median $30.99).

Specifications

Product
Product typeAC Adapter
Power
Battery typeLithium-Ion
Power adapter voltage20 V
Power adapter current8.5A
Power adapter wattage170 W

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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