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Black rectangular power brick with 4.0x1.7mm barrel connector and detachable mains lead

eForChina

eForChina 45W 20V 2.25A 4.0x1.7mm Laptop Power Adapter

SKU CH-9RBZ-JH0Y4

A 45 W laptop power adapter with a 4.0x1.7 mm tip for select Lenovo Ideapad, Yoga, Flex and Chromebook models

  • Adapter typePower Adapter
  • Travel-friendly compact design
  • Worldwide AC 100-240V 50-60Hz input compatibility
  • Delivers 45W at DC 20V 2.25A output
  • 0x1.7mm connector fits listed Ideapad, Yoga, Flex and Chromebook models
  • Includes power cable for immediate use

Travel-ready 45 W adapter

This 45 W power adapter accepts AC 100-240 V at 50-60 Hz and delivers DC 20 V at 2.25 A through a 4.0x1.7 mm barrel connector. It is built for Lenovo IdeaPad 100, 100S, 110, 110S, 120, 120S, 300, 300S, 310, 310S, 320, 320S, 500, 500S, 510, 510S, 520, 520S and 710S models as well as Chromebook N22, N23, N42, 100S and Yoga 710 series.

Plug-and-play barrel fit

Installation is a simple matter of connecting the included power cable to the adapter and inserting the 4.0x1.7 mm tip into the laptop charging port. The only common issue is selecting a model that uses a different tip size or polarity; the adapter will not fit 11.6 inch IdeaPad 100S variants or the N23 Yoga Chromebook.

45 W continuous ceiling

The unit supplies up to 45 W, which is sufficient for charging and running the listed ultraportable and mainstream IdeaPad models under normal workloads. It will not provide enough current for larger gaming or workstation laptops that require higher wattage inputs.

How it compares

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

Price $16.99
Cheaper than about 55% of the 1,761 comparable items (median $18.99).

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Specifications

Product
Adapter typePower Adapter

Questions about this item

How can I confirm the adapter is delivering 20V and 2.25A after I plug it in?

The LED on the adapter body lights when mains power is present and the laptop charging indicator shows active charging at 45W.

What comes in the box with this 4.0x1.7mm adapter?

The package includes the power adapter unit and a detachable AC power cable.

Which Ideapad or Yoga series models use the 4.0x1.7mm tip listed for this 45W unit?

Compatible models include Ideapad 100, 100S, 110, 110S, 120, 120S, 300, 310, 320, 500, 510, 520, 710S, Yoga 710, Flex 4 1130, Flex 5 1470, B5, and Chromebook N22, N23, N42, 100S, N22-20 (excluding 11.6 inch 100S and N23 Yoga).

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