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Black rectangular AC adapter with blue-tip barrel connector and detachable power cord

DELL PowerPortnerLink-65W 20V 11.8A 85W 4.5mm Blue Tip AC Adapter

SKU CH-A842-DA2QH

A 20V 11.8A 85W AC adapter with a 4.5mm blue tip and short-circuit protection for compatible laptops

  • CompatibilityLaptops
  • Battery Voltage20V
  • AC Adapter Voltage20V
  • AC Adapter Current11.8A
  • AC Adapter Output Power85W
  • FeaturesShort Circuit Protection, Round Tip 4.5mm 3.0mm Smart Blue T
  • Delivers 85W output at 20V for demanding laptops
  • 5mm blue-tip connector fits compatible HP models
  • circuit protection guards against power faults
  • 2m detachable AC cord plus 3m total reach
  • Wide 100-240V input works worldwide

DELL 85 W AC Adapter with 4.5 mm Blue Tip

This DELL PowerPortnerLink unit delivers 20 V at 11.8 A for an 85 W output through a 4.5 mm round barrel connector. It is supplied new and intended for laptops that require a 20 V DC input with this specific tip size. The adapter includes short-circuit protection and a smart chip that regulates current based on the battery state.

Limits of the 4.5 mm Barrel Interface

The 4.5 mm by 3.0 mm barrel plug fits only devices designed for that exact connector geometry and voltage. Polarity and mechanical alignment must match the laptop socket, so the adapter cannot be used with USB-C or larger barrel ports. Input voltage range is 100 to 240 V AC, allowing worldwide mains compatibility without a separate transformer.

Build Quality and Daily Use

The housing uses flame-retardant, high-temperature resistant materials rated for operation up to 50 °C. A detachable 1.2 m AC cord combines with the DC lead for a total reach of 3 m, reducing strain when the wall outlet is distant. At 676 g the unit is light enough for travel bags, and the LBS smart chip provides overcurrent and overheat safeguards during extended charging sessions.

Highlights

  • Delivers 85W output at 20V for demanding laptops
  • 5mm blue-tip connector fits compatible HP models
  • circuit protection guards against power faults
  • 2m detachable AC cord plus 3m total reach
  • Wide 100-240V input works worldwide

Specifications

BrandDELL
ModelPowerPortnerLink-65W
CompatibilityLaptops
Battery Voltage20V
AC Adapter Voltage20V
AC Adapter Current11.8A
AC Adapter Output Power85W
FeaturesShort Circuit Protection, Round Tip 4.5mm 3.0mm Smart Blue Tip, Corded Electric, NO, 0, no_plug, 19.5 volts, 10.3 amps
Dimension14.33in W x 12.83in H x 9.06in D

Questions about this item

Is the 85 W output version suitable for a laptop that ships with a 150 W adapter?

The adapter delivers 85 W at 20 V and 11.8 A. A laptop that requires 150 W will charge more slowly or may not charge under heavy load.

What does the 20 V 11.8 A rating mean for daily use?

It provides 85 W of continuous power, enough to run most mainstream laptops and charge the battery at the same time.

Does the 4.5 mm blue tip connector limit the power the adapter can deliver?

The 4.5 mm × 3.0 mm blue tip is rated for the adapter's full 85 W output; it does not impose a lower cap.

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