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Black rectangular HP power brick with attached cable and detachable mains cord

HP

HP HSTNN-LA40 45W 19.5V 2.31A laptop AC adapter

SKU CH-2QCB-ZBDVA MPN HSTNN-LA40

Genuine 45 W HP charger delivering 19.5 V at 2.31 A with included power cord

  • Genuine HP charger ensures reliable laptop power
  • 45W output at 19.5V 2.31A matches original specs
  • Universal 100-240V input works worldwide
  • Built-in protection guards against voltage, short circuit and overheating
  • Includes power cord for immediate use

Genuine 45W HP adapter for compatible laptops

The HSTNN-LA40 is an original HP AC adapter rated at 45 watts with a 19.5V 2.31A output. It replaces a lost or damaged charger for supported HP notebook models. The unit accepts a wide 100-240V input for worldwide use. It is supplied new and ready for immediate connection.

Included power cord enables instant operation

A matching mains cord is bundled so the adapter works straight from the wall socket without a separate purchase. The package contains no additional cables, software or mounting hardware. The cord completes the power path from outlet to laptop. Everything needed for basic charging is in the box.

OEM build with multiple protection circuits

Genuine HP construction uses quality materials and integrated safeguards against incorrect voltage, short circuit and internal overheating. The brick features a standard barrel connector that mates securely with the laptop power jack. No special mounting or orientation is required during daily use. The adapter is designed for reliable long-term operation.

How it compares

Measured against everything we stock in Laptop Chargers & Batteries, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 70% of the 27,790 comparable items (median $30.99).

Specifications

No published specifications for this item yet.

Questions about this item

Will the 19.5 V 2.31 A output connector wear out and need replacement?

The barrel connector on the 19.5 V 2.31 A output is rated for thousands of insertions; only physical damage or severe pin bending would require a new adapter.

What limits continuous operation of the 45 W adapter first?

The internal overheating protection (IO safeguard) will throttle or shut down the 45 W unit before any other limit is reached during sustained load.

How much heat and noise does the 100-240 V 1.1 A input adapter produce all day?

The sealed 45 W brick runs silently with no fan; surface temperature stays warm but within safe limits thanks to the internal overheating safeguard.

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