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Black rectangular AC adapter brick with 7.9mm x 5.5mm barrel connector

eForChina

eForChina 90W 20V 4.5A AC Adapter 7.9mm x 5.5mm Black

SKU CH-1SVM-RGXJC

90 W 20 V 4.5 A power adapter with 7.9 mm × 5.5 mm tip for ThinkPad T, X, L, Edge and Xiaoxin models

  • Adapter typePower Adapter
  • 90 W output delivers reliable power to compatible ThinkPad laptops
  • 20 V 4.5 A rating matches original charger specifications for safe operation
  • 9 mm × 5.5 mm barrel connector fits listed ThinkPad T, X, L and Edge models
  • circuit and overload protection guards the laptop against power faults
  • Over-temperature protection and low energy consumption reduce heat and waste

90W 20V AC Adapter for ThinkPad and ThinkBook

This 90W AC adapter delivers 20V at 4.5A through a 7.9mm x 5.5mm barrel connector. It is built as a direct replacement charger for a wide range of Lenovo ThinkPad T, X, L and Edge series laptops as well as ThinkBook and Xiaoxin models. The unit is supplied new and includes short-circuit, overload and over-temperature protection circuits.

90W output with 20V 4.5A regulation

The adapter provides a continuous 90W capacity suitable for powering and charging the listed compatible notebooks under normal workloads. It maintains the required 20V rail for systems that specify this voltage. Units requiring a higher wattage input or a different voltage will not be supported by this model.

7.9mm x 5.5mm barrel plug with safety protections

The fixed 7.9mm by 5.5mm tip mates with the DC-in jack on the compatible ThinkPad and ThinkBook chassis. Integrated short-circuit, overload and over-temperature safeguards protect both the adapter and the connected laptop during daily use. The black housing matches the aesthetic of the supported devices.

How it compares

Measured against everything we stock in Other Adapters & Couplers, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 58% of the 1,761 comparable items (median $18.99).

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Specifications

Product
Adapter typePower Adapter

Questions about this item

Will the 7.9mm x 5.5mm connector fit my older ThinkPad T420 and X220 models?

Yes, the adapter lists T420, T420S, T420i, X220 and many other T and X series models as compatible.

How can I confirm the 90W 20V 4.5A output is stable after plugging it in?

The unit includes short-circuit, overload and over-temperature protection; the laptop should charge without shutting down or showing power warnings.

Does the box include a mains lead or only the black adapter brick with 7.9mm x 5.5mm tip?

The product is the AC adapter itself; a compatible mains cable for your region must be purchased separately.

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