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Compact black GaN charger with three USB-C ports and a 4.9 ft cable

Anker

Anker B121A 70W 3-Port USB-C GaN Charger Black with Cable

SKU CH-KN7A-NT7QN

A compact GaN charger delivers up to 70W across three USB-C ports and includes a 4.9 ft cable

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

Color Black

  • Charges 14-inch MacBook Pro to 50% in 35 minutes with 70W output
  • 41% smaller than 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 4.9 ft USB-C to USB-C cable for immediate use
  • 18-month warranty and friendly customer service included

Compact GaN Charger for Multi-Device Users

The Anker B121A delivers up to 70 W from three USB-C ports in a GaN form factor measuring 2.09 × 1.68 × 1.24 inches. It can charge a 14-inch MacBook Pro (2024) from 0 to 50 % in 35 minutes and includes a 4.9 ft USB-C to USB-C cable. The 41 % smaller footprint suits travellers and desk-minimalists who need one brick for laptop, phone and tablet.

Check Your Devices Before Ordering

Each port tops out at 20 V and 1.8 A, so verify that your laptop, phone or tablet accepts 70 W over USB-C Power Delivery. The bundled cable is USB-C to USB-C only; devices with Lightning, Micro-USB or proprietary connectors will need a separate lead. Total output is shared across the three ports, so simultaneous charging splits the available power.

Sustained Load Behaviour

ActiveShield 4.0 thermal monitoring keeps surface temperatures up to 50 °F (10 °C) below international safety benchmarks during extended sessions. TÜV Rheinland certification confirms the design meets recognised safety standards for continuous operation. The compact GaN layout maintains stable output without throttling when all three ports are active for long periods.

Highlights

  • Charges 14-inch MacBook Pro to 50% in 35 minutes with 70W output
  • 41% smaller than 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 4.9 ft USB-C to USB-C cable for immediate use
  • 18-month warranty and friendly customer service included

Specifications

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

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Questions about this item

What comes in the box and what must be purchased separately?

The box contains the 70W 3-port GaN charger, a 4.9 ft USB-C to USB-C cable, and a welcome guide. No extra items are required for basic use.

Which capacity or version should I choose for a 14-inch MacBook Pro?

This single 70W model delivers the full 70W needed to charge a 14-inch MacBook Pro (2024) from 0 to 50% in 35 minutes.

What does the 70W rating mean when charging a laptop in practice?

Each USB-C port can supply up to 70W at 20V and 1.8A, enabling a 14-inch MacBook Pro (2024) to reach 50% charge in 35 minutes.

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