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Black rectangular AC adapter brick with detachable power cord and cylindrical barrel connector tip

E-buy

E-buy AC Adapter 65W 18.5V 3.5A HP DV4128 DV4129

SKU CH-B22N-2GJF0

Powers compatible HP laptops with 65W at 18.5V and 3.5A, includes AC cord and 1.7 mm by 4.8 mm connector

  • Power adapter voltage18.5 V
  • Power adapter current3.5A
  • Power adapter wattage65 W
  • 65 W output keeps compatible HP laptops running
  • 5 V / 3.5 A matches original charger specification
  • 100–240 V 50–60 Hz input works worldwide
  • 8 mm × 1.7 mm barrel connector fits DV4128 and DV4129

Compatible 65W AC adapter for HP DV4128 and DV4129

This 65 watt AC adapter delivers 18.5 volts at 3.5 amps for HP DV4128 and DV4129 series laptops. It accepts a universal AC input range of 100 to 240 volts at 50 to 60 hertz. The connector features a 1.7 millimetre internal diameter and 4.8 millimetre external diameter. An AC power cord is included in the box.

Check connector size and voltage before ordering

Verify that your laptop requires exactly 18.5 volts and 3.5 amps from its power supply. Measure the existing barrel plug to confirm a 1.7 millimetre internal diameter and 4.8 millimetre external diameter match. This unit is not suitable for devices needing a different voltage, current rating or connector dimensions. Buyers who need a higher wattage adapter or a different tip size should look elsewhere.

How it compares

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

Price $17.99
Cheaper than about 76% of the 27,790 comparable items (median $30.99).

Specifications

Power
Power adapter voltage18.5 V
Power adapter current3.5A
Power adapter wattage65 W

Questions about this item

Does the box include the AC power cord or just the adapter brick?

The AC power cord is included with the 65W adapter so you can plug it straight into a wall outlet.

How do I confirm this 18.5V 3.5A unit fits my DV4128 or DV4129 laptop?

Check that your original charger shows 18.5V 3.5A and that the barrel plug measures 4.8 mm outer and 1.7 mm inner diameter.

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