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Rectangular black power brick with 7.9x5.5mm barrel connector and detachable EU/US/UK/AU power cord

Graviton

Graviton 20V 8.5A 170W 7.9x5.5mm AC Adapter for Lenovo ThinkPad W520 W530

SKU CH-PSZQ-7R0GV

Delivers 20V 8.5A 170W power via a 7.9x5.5mm tip for ThinkPad W520 and W530

  • Delivers 170W to power demanding ThinkPad workloads
  • 20V 8.5A output matches original Lenovo specifications
  • 9x5.5mm centre-pin plug fits W520 and W530 directly
  • CE certified for electrical safety compliance
  • Wide 100-240V input supports global travel use

170 W 20 V 8.5 A Adapter

This 170 W AC adapter delivers 20 V at 8.5 A through a 7.9x5.5 mm barrel plug with a centre pin. It replaces Lenovo part numbers 45N0113, 45N0115, 45N0349 and several related codes for ThinkPad W520 and W530 mobile workstations. The unit ships with a power cord and accepts 100-240 V input at 50-60 Hz. CE certification is included.

For W520 and W530 owners needing full 170 W power

Buyers who need a direct replacement for the original 170 W charger will find the correct voltage, current and plug size here. Users of ThinkPad models that require a different wattage, plug diameter or pin arrangement should look elsewhere because this adapter matches only the listed part numbers and machine types.

7.9x5.5 mm centre-pin plug decides fit

The barrel connector measures 7.9 mm outer diameter by 5.5 mm inner diameter with a centre pin, and the adapter supplies exactly 20 V at 8.5 A. If the laptop's charging port or the original charger's plug differs in any of those dimensions, this unit will not connect or power the system correctly.

Highlights

  • Delivers 170W to power demanding ThinkPad workloads
  • 20V 8.5A output matches original Lenovo specifications
  • 9x5.5mm centre-pin plug fits W520 and W530 directly
  • CE certified for electrical safety compliance
  • Wide 100-240V input supports global travel use

Specifications

No published specifications for this item yet.

Questions about this item

Will the 7.9x5.5mm centre-pin plug fit my ThinkPad W520 or W530?

Yes — the adapter ships with a 7.9x5.5mm barrel connector that has a centre pin, matching the DC-in jack on both the W520 and W530.

What is the correct order to connect the 170W adapter so the laptop recognises it?

Plug the AC cord into the adapter first, then into the wall outlet, and finally insert the 7.9x5.5mm tip into the laptop; reversing the sequence can prevent the 20V 8.5A handshake.

When should I replace the detachable AC power cord that comes in the package?

Replace the cord if the insulation cracks, the plug pins bend, or the connector becomes loose, as a damaged cord can interrupt the 100-240V input to the 170W adapter.

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