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White rectangular DELL PA-140W power brick with USB-C Mag 3 connector and 6.6ft braided cable

DELL PA-140W 140W USB-C Mag 3 AC Adapter with 6.6ft Cable

SKU CH-TNRT-BCN0B

140 W USB-C Mag 3 power adapter with 6.6 ft braided cable fast-charges compatible MacBook Pro and Air models from 2021 onward

  • Battery voltage rating20 V
  • Power adapter voltage20 V
  • Power adapter current11.8A
  • Power adapter wattage85 W
  • Compatible withLaptops
  • Key featuresFast Charging, 5-pin, Corded Electric, 0, type a 2pin na, 20
  • 140 W output powers MacBook Pro 16-inch models from 2021 onward
  • 50 % charge reached in roughly 30 minutes with high-speed charging
  • 6 ft braided 5 A cable included for flexible placement
  • USB-C to Mag 3 connector fits Pro 14, Pro 16, Air 13 and Air 15
  • 20 V at 11.8 A delivers efficient power for compatible laptops

140W USB-C Mag 3 Adapter

The DELL PA-140W is a 140W USB-C power adapter with a Mag 3 connector designed for MacBook Pro 14-inch and 16-inch models from 2021 onward, plus MacBook Air 13-inch and 15-inch models from 2022 onward. It suits owners of M1, M2, M3 or M4 machines who need a replacement or spare charger that matches the original fast-charging profile.

Mag 3 connector and 6.6ft braided cable

The magnetic Mag 3 tip attaches securely and releases safely if the cable is pulled, reducing strain on the laptop port. A 6.6ft 5A braided cable is included, giving enough reach for desk or bedside use without an extension lead. The unit is corded electric with a 5-pin layout and carries a 20V 11.8A input rating.

85W output and fast-charge performance

Rated at 85W output, the adapter delivers up to 50% charge in roughly 30 minutes on compatible MacBook Pro 16-inch models, with a full charge in about 1 hour 20 minutes. It negotiates PD 3.1 for high-speed charging on supported hardware, while falling back to lower rates on other USB-C laptops. Normal operation stays cool and quiet with no audible fan noise.

How it compares

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

Price $53.99
Pricier than about 85% of the 27,790 comparable items (median $30.99).

Specifications

Product
Brand nameDELL
Model namePA-140 W
Part numberPD-140 W
Power
Battery voltage rating20 V
Power adapter voltage20 V
Power adapter current11.8A
Power adapter wattage85 W
Compatibility
Compatible withLaptops

Questions about this item

What power standard does the 140 W USB-C Mag 3 adapter use, and what output does it actually cap at?

The adapter follows USB Power Delivery 3.1 and is rated for 140 W, but the listed specifications show a maximum output of 85 W at 20 V and 11.8 A.

What physical connector and cable length are required to fit a MacBook with a Mag 3 port?

The unit includes a fixed USB-C to Mag 3 magnetic connector on a 6.6 ft braided cable rated for 5 A current.

How is the adapter installed, and what step do users often get wrong?

Plug the AC adapter into a wall outlet, then attach the Mag 3 end to the MacBook; the common mistake is expecting 140 W charging on models that only negotiate up to 85 W.

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