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Compact white rectangular USB-C power brick with detachable cable

DELL LZU-20V 70W USB-C AC Adapter

SKU CH-B4PN-8688S

A 70W USB-C power adapter delivering up to 85W at 20.6V/3.4A for MacBook Pro and Air models from 2017 to 2025, with a durable cable included

  • Battery voltage rating20 V
  • Power adapter voltage20 V
  • Power adapter current11.8A
  • Power adapter wattage85 W
  • Compatible withCompatible with MacBook Air 15 in(M4, 2025), MacBook Air 15
  • Key featuresFast Charging, USB Type C, Corded Electric, 1, 20.6 V, 3.4 A
  • 70W output charges MacBook Pro and Air models at full speed
  • 20V 3.4A USB-C delivery powers iPad Pro and iPhone from one adapter
  • Compact design runs cooler than standard 61W and 67W units
  • Included USB-C to USB-C cable resists tangles and daily wear
  • Intelligent chipset regulates voltage for stable charging without overheating

70W USB-C adapter for MacBook and iPad

The DELL LZU-20V delivers up to 70 watts over USB-C to charge MacBook Air and Pro models from 13 to 16 inches, including M1 through M4 devices released between 2020 and 2025. It also powers iPad Pro, iPhone and other USB-C equipment, replacing multiple bricks with a single unit.

Sustained 70W output with 85W peak capability

Rated for continuous 70W delivery, the adapter can reach 85W peak output at 20V and 11.8A while maintaining lower operating temperatures than standard 61W or 67W units. The included USB-C cable supports 20.6V at 3.4A for reliable power transfer during extended workloads.

Check your device charges via USB-C at 20V

Verify that the laptop or tablet you intend to power accepts 20V input over USB-C and does not require a proprietary barrel connector. The adapter is not suitable for hardware that demands voltages or connector types outside the USB-C Power Delivery profile listed.

How it compares

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

Price $28.99
Typical for this category: the median of 27,790 items is $30.99.

Specifications

Product
Brand nameDELL
Model nameLZU-20 V
Power
Battery voltage rating20 V
Power adapter voltage20 V
Power adapter current11.8A
Power adapter wattage85 W
Compatibility
Compatible withCompatible with MacBook Air 15 in(M4, 2025), MacBook Air 15 in(M3, 2024), MacBook Air 15 in(M2, 2023), MacBook Air 13 in(M4, 2025), MacBook Air 13 in(M3, 2024), MacBook Air 13 in(M2, 2022), MacBook Air 13 in(M1, 2020), MacBook Air Retina 13 in 2020, 2019,2018, MacBook Pro 16 in(M4,2024), MacBook Pro 16 in(M3, 2023), MacBook Pro 16 in(M2, 2022), MacBook Pro 16 in(M1, 2021), MacBook pro 16 in 2019, MacBook Pro 14 in(M4,2024), MacBook Pro 14 in(M3, 2023), MacBook Pro 14 in(M2, 2022), MacBook Pro 14 in(M1, 2021), MacBook Pro 13 in(M2, 2022),MacBook Pro

Questions about this item

Does the 70 W adapter stay cool when charging a MacBook Pro 16 all day?

The supplier states the 70 W charger operates at lower temperatures than standard 61 W or 67 W adapters, enhancing safety and long-term durability during extended use.

What cable is required for the USB-C output to work with my MacBook?

A high-quality USB-C to USB-C cable is included in the box, so no separate cable purchase is needed for compatible MacBook Air or Pro models.

Will the 20 V 3.4 A profile charge a 2017 MacBook Pro 13 (A1706) at full speed?

The adapter lists compatibility with MacBook Pro 13-inch (A1706, 2017) and delivers 70 W via USB-C, matching the original charger’s speed for that model.

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