HP Pavilion 15-cs charger

Replacement 45W Barrel (HP Smart Pin) adapter — verified compatible.

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Your laptop
HP Pavilion 15-cs
15-cs0xxx / 15-cs3xxx
Exact match
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Compatible charger
HP 45W Smart Pin 4.5mm Adapter
Barrel (HP Smart Pin) · 45W · 19.5V DC 2.31A
VerifiedHP Smart Pin (4.5mm barrel)

Matched from manufacturer specs.

INPUT 100–240VOUTPUT 20V 3.25A= 65W
Quick check: make sure the wattage matches

This charger supplies 45W over Barrel (HP Smart Pin). To find what your laptop needs, read the OUTPUT line on your current charger — the volts × amps is the wattage (e.g. 20V × 3.25A = 65W) — or check the label on the underside of your laptop. The same connector at an equal-or-higher wattage is safe.

Note: Wattage varies by configuration - confirm the wattage printed on your original adapter before buying.

Not sure? Snap a photo on the home page and we'll read it for you.

  • ✓45W output safely covers this laptop
  • ✓Connector: 4.5mm x 3.0mm, blue tip, centre pin

Why this charger is safe

  • ✓
    Higher wattage is generally safe
    Example: a 90W HP Smart adapter safely powers a 65W HP laptop. A 65W USB-C PD charger safely powers a 45W USB-C laptop.
  • ✓
    Lower wattage is not safe for full performance
    Most relevant for XPS 15/17 (130W) and Spectre x360 15/16 (135W) where a 65W charger is insufficient.
  • ✓
    Barrel tip size must match exactly
    A 7.4mm plug will not fit a 4.5mm jack and vice-versa. Dell and HP barrel tips are NOT interchangeable even at the same diameter (different pin/signalling).
  • ✓
    HP Smart Pin and Dell barrels are brand-specific
    HP Smart adapters carry a centre 'sense' pin used for wattage negotiation; Dell uses its own 1-wire ID. Mismatched brand can cause 'AC adapter not recognised' and refusal to fast-charge.
How we verified this＋
Connector: HP Smart Pin (4.5mm barrel) (4.5mm x 3.0mm, blue tip, centre pin) · HP Smart Pin (DC barrel)
Original HP part numbers: 741727-001, HSTNN-CA40.
Sources we checked (1)

Which charger does the HP Pavilion 15-cs use?

The HP Pavilion 15-cs (15-cs0xxx / 15-cs3xxx) charges with a 45W Barrel (HP Smart Pin) adapter. A charger with the same connector at an equal or higher wattage is safe — your laptop only draws the power it needs. Not sure what yours shipped with? Snap a photo of the label and we'll confirm it.

Connector: HP Smart Pin (4.5mm barrel) — how to identify it→

Related guides

Frequently asked questions

What charger does the HP Pavilion 15-cs use?＋

The HP Pavilion 15-cs uses a 45W Barrel (HP Smart Pin) charger (HP 45W Smart Pin 4.5mm Adapter), 19.5V DC.

Can I use a higher-wattage charger with the HP Pavilion 15-cs?＋

Yes. With the same Barrel connector, a charger of equal or higher wattage is safe — the laptop draws only the power it needs.

Is the HP Pavilion 15-cs USB-C or barrel charging?＋

The HP Pavilion 15-cs charges over a round barrel plug, not USB-C.

How do I confirm the right charger for my exact HP Pavilion 15-cs?＋

Read the OUTPUT line on your original charger (volts × amps = watts, e.g. 20V × 3.25A = 65W) or the label under your laptop. Wattage varies by configuration - confirm the wattage printed on your original adapter before buying.

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