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Compact black rectangular power brick with integrated cable and detachable mains lead

HP

HP HSTNN-CA18 40W 19.5V 2.05A power adapter

SKU CH-Z556-AFT53 MPN HSTNN-CA18

Original HP 40 W 19.5 V 2.05 A AC adapter with power cord for compatible laptops

  • Genuine HP adapter powers compatible laptops reliably
  • 40 W output matches original charger specifications
  • 5 V 2.05 A delivery ensures stable operation
  • 100-240 V input works worldwide with included cord
  • Tested for short-circuit and overheat protection

HP 40W 19.5V power adapter

The HP HSTNN-CA18 is a 40 watt AC adapter delivering 19.5 volts at 2.05 amps. It accepts a 100 to 240 volt input at 50 to 60 hertz for worldwide use. A power cord is included with the unit. This genuine HP part replaces models such as PA-1400-18HL and HSTNN-DA18.

Suitable for HP laptops requiring 40W 19.5V input

This adapter suits owners of compatible HP notebooks that specify a 40 watt 19.5 volt power source. It will not meet the needs of devices that require a higher wattage rating or a different output voltage. Buyers should verify their original charger matches the 19.5V 2.05A specification before purchasing.

Output fixed at 19.5V 2.05A 40W

The single deciding specification is the 19.5 volt 2.05 amp output rated at 40 watts. Only systems designed for this exact voltage and current combination will operate correctly. The adapter includes multiple protection features against incorrect voltage, short circuit and internal overheating.

How it compares

Measured against everything we stock in AC Adapters & Power Bricks, at today’s prices. Recalculated every night.

Price $13.99
Cheaper than about 90% of the 3,875 comparable items (median $23.99).

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Specifications

Product
Model nameHSTNN-CA18

Questions about this item

Will the HSTNN-CA18 40W adapter work with my older HP laptop that uses a 19.5V 2.05A input?

Yes, if the laptop requires 19.5V at 2.05A and uses the same barrel connector, this 40W adapter will power it.

How can I confirm the HSTNN-CA18 40W adapter is working correctly after I plug it in?

The laptop should show it is charging, the battery indicator lights up, and the adapter body stays at a normal temperature during use.

What is included with the HSTNN-CA18 40W adapter and what must I source separately?

The adapter comes with a power cord; however, if the purchase is made overseas, the power cable is not included and must be obtained separately.

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