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Black rectangular 45W AC adapter with 4.5x3.0mm tip and power cord

HP

HP HSTNN-LA40 45W AC Adapter 19.5V 2.31A 4.5x3.0mm with Cord

SKU CH-85XE-WSADY MPN HSTNN-LA40

Delivers 45 W at 19.5 V 2.31 A through a 4.5×3.0 mm tip and includes a power cord

  • Delivers 45W at 19.5V 2.31A for compatible HP laptops
  • Includes 4.5x3.0mm barrel tip matching HP HSTNN-LA40 spec
  • Works worldwide with 100-240V 50-60Hz 1.1A input
  • Built-in protection against incorrect voltage, short circuit and overheating
  • Genuine HP OEM unit supplied with power cord included

HP 45W AC Adapter 19.5V 2.31A

This genuine HP HSTNN-LA40 power adapter delivers 45 watts at 19.5 volts and 2.31 amps. It includes a power cord and features a 4.5x3.0mm barrel connector. The unit is designed as a direct replacement for compatible HP laptop models. It supplies regulated power for charging and operation.

Compatibility checks before ordering

Verify that your laptop requires exactly 19.5V output and accepts a 4.5x3.0mm centre-positive plug. Confirm the device draws no more than 2.31A or 45W total. Match the part number against HP references 719309-003 or 721092-001 listed for your specific model. Ensure your mains supply falls within the 100-240V 50-60Hz input range.

Sustained load behaviour

The adapter maintains continuous 45W output thanks to built-in safeguards against incorrect voltage, short circuit and internal overheating. Protection circuits regulate temperature during extended charging sessions. The 100-240V input handles global mains variation without derating. Steady 19.5V 2.31A delivery supports prolonged laptop use and battery charging simultaneously.

Highlights

  • Delivers 45W at 19.5V 2.31A for compatible HP laptops
  • Includes 4.5x3.0mm barrel tip matching HP HSTNN-LA40 spec
  • Works worldwide with 100-240V 50-60Hz 1.1A input
  • Built-in protection against incorrect voltage, short circuit and overheating
  • Genuine HP OEM unit supplied with power cord included

Specifications

No published specifications for this item yet.

Questions about this item

What does the box contain and what must I buy separately?

The package includes the genuine HP 45W AC adapter model HSTNN-LA40 and a power cord. No additional cables or components are required for standard operation.

Which part number should I select for my HP laptop?

This adapter carries manufacturer part numbers 719309-003 and 721092-001. Match one of these numbers to your laptop's service manual or original charger label to confirm compatibility.

What does the 45W rating mean when the adapter is powering my laptop?

The 45W rating reflects the maximum continuous output of 19.5V at 2.31A. It will charge the battery and run the system simultaneously provided the laptop's power draw does not exceed this limit.

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