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Black rectangular HP power brick with detachable cord

HP

HP HSTNN-LA40 45W laptop AC adapter with cord

SKU CH-B4E9-DBMJA MPN HSTNN-LA40

A 45 W HP laptop AC adapter with power cord, accepting 100–240 V input and delivering 19.5 V at 2.31 A

  • Genuine HP replacement for Chromebook 14 G1 and G3
  • 45W output at 19.5V 2.31A powers the laptop efficiently
  • Universal 100-240V 50-60Hz input works worldwide
  • Includes power cord for immediate use
  • Built-in safeguards against incorrect voltage, short circuit and overheating

Genuine 45W HP Adapter for Chromebook 14 G1 and G3

This genuine HP HSTNN-LA40 AC adapter delivers 45 watts of power for compatible Chromebook 14 G1 and G3 laptops. It includes the required power cord for immediate connection to a wall outlet. The unit is supplied new and intended as a direct replacement for the original charger.

19.5V 2.31A Output Matches Original Specification

The adapter provides a fixed 19.5 volt output at 2.31 amps, matching the electrical requirement of the supported Chromebook models. Input voltage ranges from 100 to 240 volts at 1.1 amps across 50 to 60 hertz for worldwide mains compatibility. Using a charger with different voltage or current ratings risks incorrect voltage or insufficient power delivery.

Built-In Safeguards Maintain Stable Output During

Internal protection circuits guard against incorrect voltage, short circuit and internal overheating during prolonged charging sessions. These smart features help the adapter sustain its rated 45 watt output without thermal throttling or shutdown. The design prioritises consistent power delivery over long periods rather than short peak capacity.

Highlights

  • Genuine HP replacement for Chromebook 14 G1 and G3
  • 45W output at 19.5V 2.31A powers the laptop efficiently
  • Universal 100-240V 50-60Hz input works worldwide
  • Includes power cord for immediate use
  • Built-in safeguards against incorrect voltage, short circuit and overheating

Specifications

No published specifications for this item yet.

Questions about this item

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

It delivers up to 45 watts at 19.5 volts and 2.31 amps, matching the power draw of compatible Chromebook models.

What input voltage range does the adapter accept and what frequency limits apply?

It operates on 100-240 volts at 50-60 Hz, so it works worldwide without a voltage converter.

What physical connector does the HSTNN-LA40 use to attach to the laptop?

The adapter uses a barrel-style DC plug that fits the charging port on supported HP Chromebook 14 G1 and G3 units.

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