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Black rectangular power brick with 4.5x3.0mm barrel connector and detachable power cord

Graviton

Graviton 150W 20V 7.5A 4.5x3.0mm AC Adapter

SKU CH-R1GK-J4AF6

Chicony A18-150P1A A150A039P 150W 20V 7.5A AC adapter with 4.5x3.0mm centre-pin plug for MSI GF76 laptops

  • Delivers 150W for demanding MSI GF76 workloads
  • 20V 7.5A output matches original charger specification
  • 5x3.0mm centre-pin connector ensures secure fit
  • 100-240V 50-60Hz input works worldwide
  • CE certified for European safety compliance

150W 20V AC Adapter for MSI GF76

This 150W AC adapter delivers 20V at 7.5A through a 4.5x3.0mm barrel connector with a centre pin. It is built as a direct replacement for the Chicony A18-150P1A and A150A039P units supplied with MSI GF76 laptops. The package includes the adapter and a detachable power cord with EU, US, UK or AU plug options.

Straightforward plug-in replacement

Installation consists of connecting the barrel plug to the laptop and the cord to a wall outlet; the 100-240V 50-60Hz input handles global mains voltages automatically. The only common issue is ordering the wrong tip size, so verify that the original charger uses a 4.5mm outer diameter, 3.0mm inner diameter connector with a centre pin before purchase.

4.5x3.0mm centre-pin barrel connector

This single specification decides compatibility: the laptop must accept a 4.5mm by 3.0mm barrel plug with a centre pin. Buyers whose devices use a different diameter, a USB-C power input or a proprietary multi-pin connector cannot use this adapter.

How it compares

Measured against everything we stock in Tech Gadgets & Accessories, at today’s prices. Recalculated every night.

Price $55.99
Pricier than about 81% of the 5,998 comparable items (median $24.99).

Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the adapter is delivering the rated 150 W after plugging it in?

Check that the laptop reports 20 V and 7.5 A while charging; the adapter label lists 150 W output, so those two figures together confirm full power delivery.

What comes in the box and do I need any extra cables?

The package includes one AC adapter and one power cord; the cord matches the EU, US, UK or AU plug type selected at purchase, so no additional cable is required.

Which connector size should I choose for the MSI GF76?

Select the 4.5 x 3.0 mm plug with a centre pin; it matches the MSI GF76 charging port and the adapter part numbers A18-150P1A and A150A039P.

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