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Black rectangular AC adapter with blue 4.5mm right-angle tip and detachable cord

11-ah 45W 19.5V 2.31A laptop battery

SKU CH-PX1M-5A8Q5 MPN 11-ah

A 45W 19.5V 2.31A AC adapter with a 4.5mm blue tip for compatible HP Pavilion and Stream laptops

  • Battery type96 W
  • Battery voltage rating20 V
  • Power adapter voltage20 V
  • Power adapter current11.8A
  • Power adapter wattage85 W
  • Measurements14.33 in W × 12.83 in H × 9.06 in D
  • 45W output powers compatible HP Pavilion and Stream laptops
  • 5V 2.31A rating matches original charger specifications
  • 5mm blue tip connector fits supported HP models
  • Energy-efficient Level VI design reduces power waste
  • CE and FCC certified for electrical safety

45W HP charger with 4.5mm blue tip

This new AC adapter delivers 45W at 19.5V and 2.31A through a 4.5mm blue-tip connector. It is built for HP Stream and Pavilion notebooks that specify exactly this output. The unit carries CE certification and meets Level VI energy-efficiency requirements. It replaces HP part numbers 741727-001, 721092-001 and 719309-001.

Output must be 45W 19.5V 2.31A

The single specification that decides compatibility is the rated output of 45W at 19.5V and 2.31A with a 4.5mm blue tip. If the original charger shows 65W, 90W, 120W, 135W or 150W this adapter will not work. The connector size and voltage must match the laptop's requirement exactly. No other power rating is supported by this unit.

Sustained 45W delivery under load

Under continuous operation the adapter maintains its 45W rating without stepping down to a lower wattage. Level VI efficiency keeps heat generation low during extended charging sessions. The corded design with a 90-degree bend reduces strain on the port during daily use. It is intended for steady 45W workloads, not for higher-power systems.

How it compares

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

Price $24.99
Cheaper than about 62% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameDELL
Model nameBRJ45195231
Part numberSK90A195231
Power
Battery type96 W
Battery voltage rating20 V
Power adapter voltage20 V
Power adapter current11.8A
Power adapter wattage85 W
Size & build
Measurements14.33 in W × 12.83 in H × 9.06 in D
Product weight0.0330693393 lb (0.02 kg)

Questions about this item

What does the 45W rating mean when the adapter is powering my laptop?

It supplies up to 45 watts at 19.5 volts and 2.31 amps, matching the original charger for compatible HP Pavilion and Stream models.

Which connector standard does the 4.5 mm blue tip follow and what does it limit?

The 4.5 mm × 3 mm round tip with a 90 degree bend fits only HP laptops that require a 45W blue-tip adapter; it will not work with 65W or higher units.

What physical clearance does the adapter need to plug in and sit securely?

The corded brick uses a 4.5 mm blue tip with a right-angle bend, so the laptop’s charging port must accept that exact connector shape.

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