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Compact blue GaN charger with three USB-C ports and matching cable

Anker

Anker B121A Nano 70W 3-Port GaN Charger Blue with Cable

SKU CH-BGXM-X4MTJ

A 70W GaN charger with three USB-C ports and an included 4.9 ft cable, 41% smaller than typical 70W chargers

  • TypeGaN Charger
  • Compatible Phone ModelIphone17
  • ColorBlue
  • Max Power Output70W
  • Output Volt20V
  • Output Amp1.8A

Color Blue

  • Charges a 14-inch MacBook Pro to 50% in 35 minutes
  • 70W maximum output from each USB-C port
  • 41% smaller than a standard 70W charger at 2.09 × 1.68 × 1.24 inches
  • Runs up to 50°F cooler than safety benchmarks with ActiveShield 4.0 monitoring
  • Includes a 4.9 ft USB-C to USB-C cable in the box

Three-Port 70W GaN Charger

The Anker B121A supplies up to 70W across three USB-C ports, letting a single brick power a laptop, phone and tablet at once. It targets travellers and desk users who want one compact charger for every device they carry. The blue textured finish and metal frame give it a clean, modern look.

70W Headroom and Limits

Each port can deliver the full 70W maximum, enough to charge a 14-inch MacBook Pro (2024) from 0 to 50% in 35 minutes. When multiple devices draw power simultaneously the 70W total is shared, so combined loads above that ceiling will run slower. The 20V 1.8A rating sets the single-port ceiling.

USB-C Power Delivery Constraints

The charger uses the USB-C Power Delivery standard, so output voltage and current negotiate automatically with each connected device. ActiveShield 4.0 thermal monitoring keeps surface temperatures up to 50°F (10°C) below international safety benchmarks. A 4.9 ft USB-C to USB-C cable is included in the box.

Highlights

  • Charges a 14-inch MacBook Pro to 50% in 35 minutes
  • 70W maximum output from each USB-C port
  • 41% smaller than a standard 70W charger at 2.09 × 1.68 × 1.24 inches
  • Runs up to 50°F cooler than safety benchmarks with ActiveShield 4.0 monitoring
  • Includes a 4.9 ft USB-C to USB-C cable in the box

Specifications

BrandAnker
ModelB121A
TypeGaN Charger
Compatible Phone ModelIphone17
ColorBlue
Max Power Output70W
Output Volt20V
Output Amp1.8A

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Questions about this item

Will this 70W charger work with my older 65W laptop and phone?

Yes, each USB-C port supplies up to 70W and negotiates down to whatever your 65W laptop or phone requests, so legacy devices charge at their normal speed.

How can I verify the 70W output is active after plugging in?

A 14-inch MacBook Pro (2024) should reach 50% in about 35 minutes, and the ActiveShield 4.0 system keeps the surface up to 10°C cooler than safety limits during that session.

Does the box include the 4.9 ft USB-C cable or must I buy one separately?

The 4.9 ft USB-C to USB-C cable is included, along with the charger and welcome guide; no extra cable purchase is needed.

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