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Black rectangular laptop AC adapter with 5.5mm barrel connector and integrated power cable

POWER-FENG

POWER-FENG PA-1900-56LC 20V 4.5A laptop AC adapter

SKU CH-0KM5-T0H2V

20V 4.5A AC adapter with 5.5mm*2.5mm tip for compatible Lenovo IdeaPad and G-series laptops

  • TypeBattery
  • Wide voltage input suits travel use
  • 20 V 4.5 A output powers compatible Lenovo models
  • 5 mm by 2.5 mm barrel fits listed part numbers
  • Replaces part 36001652 for direct swap
  • New condition ensures reliable operation

What this adapter replaces

The POWER-FENG PA-1900-56LC is a 20 V 4.5 A AC adapter with a 5.5 mm by 2.5 mm barrel connector. It accepts 100 to 240 V input at 50 to 60 Hz for worldwide use. The unit is listed as compatible with a wide range of Lenovo IdeaPad and G series models including G700, Y580, S500, Z570, U450, B570, Y485, V580, Z585, B480, B485, N581, N585, N586, Y460, Y560, B465, G465, G565, Z465, Z565, B470, B475, E47, G470 and G570.

Who should buy it and who should not

This adapter suits owners of the listed Lenovo laptops who need a replacement or spare charger matching the original 20 V 4.5 A specification. It will not suit laptops that require a different output voltage, a higher current rating or a different connector size. Buyers with USB-C charging only devices or models needing 65 W or 90 W units should look elsewhere.

Behaviour under continuous load

The adapter delivers a steady 20 V at up to 4.5 A, supporting sustained operation while the laptop runs and charges the battery simultaneously. Its wide input range maintains output stability across 100 to 240 V mains supplies. Adequate ventilation around the brick helps maintain consistent performance during extended use.

Highlights

  • Wide voltage input suits travel use
  • 20 V 4.5 A output powers compatible Lenovo models
  • 5 mm by 2.5 mm barrel fits listed part numbers
  • Replaces part 36001652 for direct swap
  • New condition ensures reliable operation

Specifications

TypeBattery

Questions about this item

Which Lenovo laptop models accept the 5.5 mm by 2.5 mm barrel connector on this adapter?

Compatible models include G700, Y580, S500, Z570, U450, B570, IdeaPad Y485, V580, Z585, B480, B485, N581, N585, N586, Y460, Y560, B465, G465, G565, Z465, Z565, B470, B475, E47, G470 and G570.

Will this 20 V 4.5 A unit charge a legacy Lenovo that originally shipped with a 90 W 20 V brick?

Yes. The 20 V 4.5 A output delivers 90 W, matching the voltage and wattage of the original supply, so the older laptop will charge normally.

How can I confirm the adapter is delivering the rated 20 V 4.5 A after I plug it in?

The laptop charging LED should illuminate and the OS battery indicator must show "Plugged in, charging" with the charge percentage rising steadily.

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