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Black rectangular power brick with 5.5x2.5mm barrel connector and detachable power cord

Graviton

Graviton 19V 4.74A 90W 5.5x2.5mm PA-1900-32 AC Adapter

SKU CH-447A-R26D4

Supplies 19 V at 4.74 A for 90 W laptop charging via a 5.5 × 2.5 mm plug with 100–240 V input

  • 90 W output powers demanding laptops reliably
  • 19 V 4.74 A matches original charger specifications exactly
  • 5 × 2.5 mm barrel fits the required port precisely
  • 100–240 V 50–60 Hz input works worldwide with included cord
  • CE certified for verified safety compliance

What this adapter replaces

The Graviton PA-1900-32 is a 90W AC adapter built to replace a lost or damaged charger for laptops that require 19V at 4.74A. It suits users who need a direct plug-in replacement without modifying the device or using a universal brick with selectable tips.

When the upgrade is worth it

Switching to this unit makes sense when the original charger fails, the barrel connector wears loose, or the cable frays near the plug. The 5.5x2.5mm tip matches the factory specification exactly, so the mechanical fit and electrical rating stay identical to the OEM supply.

Limits of the barrel interface

The 5.5x2.5mm barrel connector carries the full 90W through a single centre pin and outer sleeve, so a loose or oxidised socket on the laptop side will cause intermittent charging regardless of adapter quality. The adapter accepts 100-240V input at 50-60Hz, but it cannot compensate for a worn DC jack or a motherboard fault that draws more than 4.74A.

How it compares

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

Price $18.99
Cheaper than about 65% of the 5,998 comparable items (median $24.99).

Specifications

No published specifications for this item yet.

Questions about this item

What is the barrel plug size for this 19 V 4.74 A adapter?

The adapter uses a 5.5 x 2.5 mm barrel plug; the listing notes it is not the 5.5 x 1.7 mm variant.

How do I connect the AC adapter to mains power?

Plug the supplied power cord into the adapter’s IEC inlet, then into a 100-240 V 50-60 Hz wall socket; the step often missed is seating the cord fully into the adapter before switching on.

When should I replace the power cord that comes with this unit?

Replace the cord if the plug pins are bent, the insulation is cracked, or the cord becomes warm during normal use.

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