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Black rectangular HP power adapter with 7.4 by 5.0 mm barrel connector and detachable power cord

HP

HP HSTNN-HA01 19V 7.1A 135W Power Adapter

SKU CH-2AEM-JVT8T MPN HSTNN-HA01

Delivers 19 V at 7.1 A for 135 W output with a 7.4 × 5.0 mm connector and includes a power cord

  • Delivers 135W output for demanding HP laptops
  • 19V 7.1A supply matches original charger specifications
  • 100-240V input enables worldwide travel use
  • 4 x 5.0 mm connector fits compatible HP models
  • Includes power cord for immediate operation

HP 135W Adapter for Compatible Laptops

This genuine HP HSTNN-HA01 power adapter delivers 19V at 7.1A for a total of 135W output. It includes a detachable power cord and uses a 7.4 x 5.0 mm connector tip. The unit accepts worldwide input from 100-240V at 2.2A across 50-60Hz.

Replacing Lost or Failing 135W Units

It directly replaces an original HP adapter with the same part number 481420-002 and matching voltage, amperage, and tip size. The jump is worth it when your current brick no longer holds a charge, the cable is damaged, or you need a spare for travel. Buyers needing a different wattage or connector geometry should look elsewhere.

Limits of the 7.4 x 5.0 mm Barrel Interface

The round barrel connector fits only devices designed for this exact 7.4 x 5.0 mm centre-positive tip. Polarity, voltage, and physical dimensions must match the laptop's charging port exactly. The 100-240V input covers global mains standards, but the fixed 19V 7.1A output cannot be adjusted for hardware requiring other profiles.

Highlights

  • Delivers 135W output for demanding HP laptops
  • 19V 7.1A supply matches original charger specifications
  • 100-240V input enables worldwide travel use
  • 4 x 5.0 mm connector fits compatible HP models
  • Includes power cord for immediate operation

Specifications

ModelHSTNN-HA01

Questions about this item

What size barrel connector does the HSTNN-HA01 use for the laptop side?

The adapter uses a 7.4 mm by 5.0 mm barrel connector for the laptop connection.

How do I connect the included power cord to the adapter brick?

Plug the IEC C13 end of the supplied cord into the C14 inlet on the adapter body, then insert the wall plug into a 100-240 V outlet.

When should I replace this 135 W adapter?

Replace it if the output drops below 19 V 7.1 A, the cord frays, the brick overheats, or the connector becomes loose.

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