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Black rectangular AC adapter with blue-tip barrel connector and two-pin mains plug

HP 45W AC Adapter Blue Tip 4.5*3.0mm

SKU CH-2W79-MCBYA

45W AC adapter with 4.5*3.0mm blue tip for HP Stream and Pavilion laptops

  • Battery voltage rating20 V
  • Power adapter voltage20 V
  • Power adapter current11.8A
  • Power adapter wattage85 W
  • Compatible withHP laptop charger blue tip 45w
  • Key featuresFast Charging, 4.5 × 3.0 mm Blue Tip, AC, 2, type a 2pin na,
  • 45W output powers compatible HP laptops efficiently
  • 5V 2.31A delivery matches original charger specifications
  • 5*3.0mm blue tip connector fits listed HP models
  • 100-240V input enables worldwide travel use
  • Replaces over 50 HP part numbers for broad compatibility

HP 45W Blue Tip AC Adapter

This 45-watt AC adapter uses a 4.5 by 3.0 millimetre blue tip connector to power compatible HP Stream and Pavilion laptops. It accepts 100 to 240 volts AC at 50 to 60 hertz and delivers 19.5 volts at 2.31 amps.

Sustained load behaviour

The adapter is rated for continuous 45-watt output with fast-charging support. Input voltage range handles global mains without switching. No thermal or duty-cycle limits are specified in the data.

Pre-order checklist

Verify your laptop requires a 4.5 by 3.0 millimetre blue tip; the 7.4 by 5.0 millimetre tip will not fit. Confirm the original part number appears in the compatible list. Ensure the device expects 19.5 volts at 2.31 amps.

How it compares

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

Price $13.99
Cheaper than about 85% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameDELL
Model nameLX-65 W
Power
Battery voltage rating20 V
Power adapter voltage20 V
Power adapter current11.8A
Power adapter wattage85 W
Compatibility
Compatible withHP laptop charger blue tip 45w

Questions about this item

Does the 45 W adapter run hot when it charges a Stream 14 all day?

The unit delivers 19.5 V at 2.31 A and meets IEC 60950-1 safety limits, so it stays within normal temperature range during continuous use.

What must I already have for this blue-tip charger to work?

You need an HP laptop that accepts a 4.5 × 3.0 mm blue-tip connector and draws 19.5 V at 2.31 A; the package includes only the adapter and a two-pin AC cord.

Will this 45 W brick power my older Pavilion 15-r015dx alongside a newer Spectre x360?

Yes — the adapter matches the 19.5 V 2.31 A spec listed for both the Pavilion 15-r015dx and Spectre x360 models in the compatibility list.

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