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White rectangular power adapter with magnetic Surface connector and USB-A port, matte finish, coiled cable attached

WENYAA 65W Surface Charger USB-A 20V 11.8A 85W

SKU CH-HAAN-XNFY6

Replacement 65 W AC adapter with USB-A port charges Microsoft Surface Pro, Laptop, Book and Go models from 20 V 11.8 A input

  • 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
  • Charges Surface Pro and Laptop models at 65W
  • Extra USB-A port adds 5W for phones or accessories
  • Automatic thermal and short-circuit protection keeps devices safe
  • Works with 44W and 36W Surface devices for flexible use
  • Input range 100 to 240V suits worldwide travel

Replacement Adapter for Surface Devices

This 65 W power adapter replaces the original Microsoft charger for Surface Pro, Surface Laptop, Surface Book and Surface Go models. It delivers 20 V at 11.8 A for a total output of 85 W and includes an extra USB Type-A port rated at 5 V 1 A. The unit accepts AC 100–240 V at 50–60 Hz input.

Sustained Load Behaviour

The adapter maintains its rated output continuously thanks to automatic thermal protection, overload cut-off and short-circuit safeguards. These circuits prevent shutdown during extended charging sessions and protect both the power supply and the connected device from voltage spikes.

Installation and Common Issues

Connection is straightforward: plug the AC cord into the brick, attach the magnetic Surface connector to the device and insert the USB-A cable if a second peripheral needs power. The most frequent problem is cable strain near the connector; the reinforced cord sheath reduces bending fatigue but careful routing is still advised.

How it compares

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

Price $26.99
Cheaper than about 58% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameDELL
Model nameSK90150400
Part numberSK90150400
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 weight0.3 lb (0.14 kg)
Compatibility
Compatible withLaptops

Questions about this item

How much heat or noise does the 65W charger produce when running continuously?

The adapter is corded electric with automatic thermal protection, overload cut-off and short-circuit protection, so it stays cool and silent during all-day use.

What must I already own to use the USB Type-A 5V 1A port on this charger?

You need a device that charges via a standard USB-A cable at 5 volts and 1 amp, such as a phone, headphones or a small power bank.

Will the 20V 11.8A output work with my older Surface Pro 3 that originally used a 36W supply?

Yes, the charger is compatible with Surface Pro 3 and automatically delivers the correct power for 36W, 44W and 65W models.

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