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Black rectangular Dell AC adapter brick with detachable power cord

DELL SK90150400 85W 20V 11.8A AC Adapter

SKU CH-8V9H-QK75Z

An 85-watt, 20-volt AC adapter supplying 11.8 amps for compatible laptops

  • 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
  • Compatible withLaptops
  • 85W output powers demanding Dell laptops efficiently
  • 20V 11.8A delivery matches original adapter specifications
  • New condition ensures full performance and reliability
  • Wide 100-240V input works worldwide without converters
  • Compact 7oz design fits easily in travel bags

DELL SK90150400 85W AC Adapter

The DELL SK90150400 is an 85 watt AC adapter delivering 20 volts at 11.8 amps for compatible laptop systems. It operates on 100 to 240 volt input at 50 to 60 hertz and includes a ten foot power cord with a magnetic connector. An LED indicator shows charging status at a glance.

Wide Microsoft Surface Compatibility

This charger suits owners of Microsoft Surface Pro models 3 through 11, Surface Laptop 1 through 7, Surface Book 1 through 3 and Surface Go 1 through 4 who need a replacement 65 watt supply with an extra USB charging port. It is not for buyers who require the original DELL 85 watt output specification or a barrel-type connector for non-Surface laptops.

Single Deciding Specification

The critical figure is the 15 volt 4 amp output rated at 65 watts with a 5 volt 1 amp USB port, which differs from the DELL model label of 20 volts 11.8 amps at 85 watts. Verify your device requires 15 volts before purchasing.

How it compares

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

Price $29.99
Typical for this category: the median of 27,790 items is $30.99.

Specifications

Product
Brand nameDELL
Model nameSK90150400
Power
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 weight7 oz
Compatibility
Compatible withLaptops

Questions about this item

Should I choose the 85W 20V 11.8A model or the 65W 15V 4A version?

The 85W model delivers 20V at 11.8A for Dell laptops requiring that output, while the 65W version supplies 15V at 4A for Microsoft Surface devices; match the adapter to the voltage and wattage your laptop specifies.

What does the 85W rating mean when I plug this into my laptop?

It means the adapter can supply up to 85 watts at 20 volts and 11.8 amps, so it will charge compatible Dell laptops at full speed and run them under load without draining the battery.

Does the barrel connector follow a standard that limits the voltage or current?

The adapter uses a proprietary Dell barrel connector rated for 20V and 11.8A, so the 85W output is not capped by a generic barrel standard.

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