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Black rectangular AC adapter with 5.5mm barrel plug and cable

Ruth's sister

Ruth's sister 20V 4.5A 90W PA-1900-56LC internal power cable

SKU CH-GQ5Z-A8PDT

90 W 20 V 4.5 A adapter with 5.5 × 2.5 mm plug fits IdeaPad G570 G770 V570 Z570 models

  • Delivers 90 W for reliable IdeaPad charging
  • 20 V 4.5 A output matches original adapter spec
  • 5 mm × 2.5 mm barrel fits G570 G770 V570 Z570 models
  • New condition ensures full performance from first use

Replacement AC adapter for IdeaPad laptops

This 20V 4.5A 90W AC adapter replaces part numbers PA-1900-56LC, CPA-A090 and ADP-90DDB. It fits Lenovo IdeaPad G570, G770, V570 and Z570 models. The unit is supplied new and ready to install. ||

5.5 mm by 2.5 mm barrel connector

The charger uses a 5.5 mm outer diameter and 2.5 mm inner diameter barrel plug. Verify that the laptop requires this exact connector size before ordering. Buyers who need a different tip diameter or a higher wattage rating will not be able to use this adapter.

How it compares

Measured against everything we stock in Internal PSU & Riser Cables, at today’s prices. Recalculated every night.

Price $56.99
Pricier than about 85% of the 7,839 comparable items (median $14.99).

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Specifications

No published specifications for this item yet.

Questions about this item

Will the 90W output run my IdeaPad G570 at full speed?

The 90W rating matches the original adapter spec for the G570, so the laptop can draw its maximum power without throttling.

Does the 5.5mm by 2.5mm barrel connector fit the G770 charging port?

Yes, the 5.5mm outer and 2.5mm inner diameter matches the Lenovo IdeaPad G770 DC-in jack exactly.

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