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Black rectangular power brick with blue-tipped barrel connector and detachable mains lead

ROLADA 45W AC Adapter 19.5V 2.31A Smart Blue Tip 4.5mm x 3.0mm

SKU CH-84WK-S3XKV

A 45W AC adapter with a 4.5mm x 3.0mm smart blue tip delivering 19.5V at 2.31A for compatible HP laptops

  • Battery typeBRJ45195231
  • Battery voltage rating5 V
  • Battery capacity19.5 V
  • Power adapter voltage19.5 V
  • Power adapter current2.31 A
  • Power adapter wattage45 W
  • Delivers 45 W of reliable power for compatible HP laptops
  • Smart 4.5 mm × 3.0 mm blue-tip connector ensures a precise fit
  • Built-in protection guards against over-heating, over-charging, short-circuits and voltage surges
  • Lightweight design at 0.54895103238 lb slips easily into bags for travel or office use
  • Broad compatibility across HP Stream, Pavilion x360, Envy, ProBook, EliteBook, Spectre and Notebook 14 15 series

ROLADA 45W Smart Blue Tip Adapter

This 45W AC adapter delivers 19.5V at 2.31A through a 4.5mm x 3.0mm blue tip connector. It is designed as a replacement power supply for compatible HP laptops. The unit includes the adapter and a power cord for immediate use. Safety features protect against over-heating, over-charging, short-circuiting, and voltage surges.

Who This Suits and Who Should Look Elsewhere

Buyers with HP Stream, Pavilion x360, Envy, ProBook, EliteBook, Spectre, or Notebook 14 15 models requiring this exact tip size will find a direct fit. Those needing a different connector diameter, a higher wattage output, or a USB-C charging solution should look elsewhere. Laptops demanding more than 45W are not supported by this unit.

The Deciding Specification: 4.5mm x 3.0mm Blue Tip

The proprietary smart blue tip measures 4.5mm outer diameter by 3.0mm inner diameter with a centre pin. This connector geometry is the single factor that determines physical and electrical compatibility. Verify your original charger's tip dimensions and 19.5V 2.31A rating before ordering to ensure a correct match.

How it compares

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

Price $19.99
Cheaper than about 72% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameROLADA
Model nameBRJ45195231
Part numberSK90A195231
Power
Battery typeBRJ45195231
Battery voltage rating5 V
Battery capacity19.5 V
Power adapter voltage19.5 V
Power adapter current2.31 A
Power adapter wattage45 W
Size & build
Product weight0.54895103238 lb (0.25 kg)
Compatibility
Compatible withLaptops

Questions about this item

Does the 45W adapter ship with a power cord or must I buy one separately?

The box contains one 45W AC adapter and one power cord so nothing extra is required.

My original charger shows 19.5V 2.31A — is this 45W unit the correct replacement?

Yes, the adapter delivers exactly 19.5V and 2.31A for 45W output, matching those specifications.

Will the 4.5mm x 3.0mm blue tip fit my HP Pavilion x360 14?

The smart blue tip measures 4.5mm by 3.0mm with a centre pin, the connector used on many Pavilion x360 11 13 15 17 models.

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