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Rectangular black laptop power adapter with cable and barrel connector

Ruth's sister

Ruth's sister 20V 4.5A 90W AC adapter charger

SKU CH-NQ55-CJ0VG

A 90W 20V 4.5A AC adapter compatible with part numbers 45N0306, ADLX90NCC2A, 45N0235, PA-1900-72IF, 45N0236, ADLX90NDC3A and 45N0483

  • Delivers 90 W at 20 V and 4.5 A for reliable laptop charging
  • Replaces Lenovo part numbers 45N0306, 45N0235, 45N0236, 45N0483, ADLX90NCC2A, ADLX90NDC3A, PA-1900-72IF
  • Brand-new condition ensures full performance from first use
  • Compact AC adapter design fits easily in a laptop bag for travel

Compatible 90W AC adapter

This 20V 4.5A 90W AC adapter charger replaces Lenovo part numbers 45N0306, ADLX90NCC2A, 45N0235, PA-1900-72IF, 45N0236, ADLX90NDC3A and 45N0483. It supplies the rated voltage and current for laptops that require a 90 watt input. The unit is new and ready for immediate use as a direct replacement or spare.

Sustained 90W delivery

Under continuous load the adapter maintains its 20V 4.5A output without dropping below the rated 90W. Thermal protection engages only if internal limits are exceeded, allowing uninterrupted operation during long work sessions. It is not suited for laptops that demand more than 90W or a different voltage.

How it compares

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

Price $23.99
Cheaper than about 64% of the 27,790 comparable items (median $30.99).

Specifications

No published specifications for this item yet.

Questions about this item

How much heat does the 90W adapter produce when running all day?

The 20V 4.5A unit is rated for 90W continuous output; typical efficiency means modest warmth, not excessive heat, during extended use.

Which laptop connector does the 4.5A charger need to fit my machine?

It replaces Lenovo part numbers 45N0306, 45N0235, 45N0236, 45N0483, ADLX90NCC2A, ADLX90NDC3A and PA-1900-72IF, so your laptop must use one of those tips.

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