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Black rectangular AC adapter with barrel connector and power cord

Ruth's sister

Ruth's sister 19.5V 2.31A 45W AC adapter HSTNN-CA41

SKU CH-5VX3-0AS87

A 45 W laptop charger delivering 19.5 V at 2.31 A, compatible with ProBook 640 G2, 645 G2, 430 G4, 440 G4, 640 G3, 650 G2 and 655 G2 models

  • Powers compatible ProBook models reliably
  • Delivers 19.5V at 2.31A for stable charging
  • 45W output meets original adapter specification
  • Replaces HSTNN-CA41 part number directly

45W AC adapter for ProBook models

This 45 watt AC adapter from Ruth's sister delivers 19.5 volts at 2.31 amps for compatible HP ProBook laptops. It matches the HSTNN-CA41 part number and supports several 640, 645, 650 and 655 series devices. The unit is supplied new and ready for use as a replacement or spare charger.

Check voltage and connector before ordering

Verify that your ProBook requires exactly 19.5V and 2.31A and that the barrel connector fits your charging port. Confirm the model number appears in the supported list including 430 G4, 440 G4, 640 G2, 640 G3, 645 G2, 650 G2 and 655 G2. Buyers needing a different voltage, amperage or connector type should look for an alternative adapter.

How it compares

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

Price $25.99
Cheaper than about 60% of the 27,790 comparable items (median $30.99).

Specifications

No published specifications for this item yet.

Questions about this item

Does the adapter include a detachable mains lead or must I buy one separately?

The listing shows only the 19.5V 2.31A 45W brick with part number HSTNN-CA41; no separate mains cable is mentioned.

My ProBook 640 G3 needs 45 W — is this the correct capacity?

Yes, the adapter delivers 45 W at 19.5V 2.31A and is listed for the 640 G3 among other models.

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