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Black rectangular Lenovo 45W AC power adapter with 4.0 by 1.7mm barrel plug

Lenovo

Lenovo PA-1450-55LL 45W ac adapter 20V 2.25A 4.0*1.7mm

SKU CH-WZKC-47070 MPN PA-1450-55LL

Delivers 45 W at 20 V 2.25 A via a 4.0 × 1.7 mm tip for IdeaPad 110 310 510 710 models

  • ColorBlack
  • 45W output powers compatible Lenovo IdeaPad models efficiently
  • 20V 2.25A delivery matches original charger specifications exactly
  • 0×1.7mm barrel connector fits listed IdeaPad 100 110 310 510 710 series
  • 100-240V 50-60Hz input enables worldwide mains compatibility
  • Genuine Lenovo PA-1450-55LL part ensures reliable OEM replacement

Replacement adapter for IdeaPad laptops

This 45 W Lenovo PA-1450-55LL unit replaces the original charger on compatible IdeaPad models including the 100, 110, 310, 510 and 710 series as well as selected Yoga and Flex 4 devices. It accepts a 100 to 240 V input at 50 to 60 Hz and delivers 20 V at 2.25 A through a 4.0 by 1.7 mm barrel connector. The black housing matches the OEM appearance.

Direct-fit connector removes trial and error

The 4.0 by 1.7 mm pin size is built to the specification used across the listed IdeaPad families, so the plug seats securely without adapters or force. A single cable carries both the AC inlet and the DC output, keeping the desktop footprint small. No extra software or configuration is required; the adapter negotiates power automatically.

Suits owners of supported IdeaPad.

Buyers with a matching model number and the 4.0 by 1.7 mm port can use this adapter as a direct replacement or spare. Users whose laptops demand a higher wattage, a different voltage or an alternative connector shape should look for a unit that matches those specifications.

Highlights

  • 45W output powers compatible Lenovo IdeaPad models efficiently
  • 20V 2.25A delivery matches original charger specifications exactly
  • 0×1.7mm barrel connector fits listed IdeaPad 100 110 310 510 710 series
  • 100-240V 50-60Hz input enables worldwide mains compatibility
  • Genuine Lenovo PA-1450-55LL part ensures reliable OEM replacement

Specifications

BrandLenovo
ModelIdeaPad
Part NumberPA-1450-55LL
ColorBlack

Questions about this item

Will the 4.0*1.7mm barrel tip wear out and need replacing?

The barrel tip is a fixed part of the cable; if the pin or sleeve becomes loose or bent, the entire adapter must be replaced.

What limits continuous 45W output during all-day use?

The adapter is rated for 45W at 20V and 2.25A; sustained loads at that level are its design ceiling.

How hot or noisy does the PA-1450-55LL get when running 24/7?

It has no fan, so it runs silently; the enclosure warms to typical external power-brick temperatures under full 45W load.

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