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Compact gray GaN charger with foldable plug, smart display and three USB ports

Anker

Anker B121B 100W 3-Port GaN Charger with Smart Display

SKU CH-5JV8-Y9D0Y

A compact 100W GaN charger with three ports, a smart display and a foldable plug for travel

  • Compatible phone brandsApple
  • Compatible phone modelsiPhone
  • Adapter connectorUSB Type-C
  • Max output power100 W
  • Output voltage20 V
  • Supported voltage240 V

Color Gray

  • Delivers steady 100W output on every USB-C port with GaN efficiency
  • Smart display shows live power, voltage and temperature readouts with milestone tracking
  • Foldable plug and 330% smaller frame measures 2.72 x 2.17 x 1.34 inches for pocket carry
  • Automatically switches to 95W + 5W low-current mode for earbuds and small devices
  • Includes 4.9 ft USB-C to USB-C cable and welcome guide

100W GaN Charger with Smart Display

The Anker B121B delivers up to 100W from either USB-C port using GaN technology in a 2.72 x 2.17 x 1.34 inch frame. It includes a 4.9 ft USB-C cable and suits travellers who need one compact brick for a MacBook, iPad and iPhone 16 or 17 series devices.

Smart Display Shows Live Power Data

The built-in screen reports real-time wattage, voltage and temperature for each active port. It also logs total usage hours so you can monitor long-term charger health without extra software.

Two High-Power USB-C Ports Share 100W

Both USB-C ports support 5V3A, 9V3A, 15V3A and 20V5A profiles, but the 100W ceiling is split when two laptops charge together. Buyers who need simultaneous full-speed charging for two large laptops should look elsewhere.

How it compares

Measured against everything we stock in Charging Stations & Cables, at today’s prices. Recalculated every night.

Price $51.99
Pricier than about 90% of the 9,983 comparable items (median $18.99).

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Specifications

Product
Brand nameAnker
Model nameB121B
Product typeCharger Kit
Product colorGray
Ports & slots
Adapter connectorUSB Type-C
Power
Max output power100 W
Output voltage20 V
Supported voltage240 V
Compatibility
Compatible phone brandsApple
Compatible phone modelsiPhone

Questions about this item

Should I pick the single-port 100W mode or the multi-port split for my MacBook and iPhone?

One USB-C port delivers the full 100W at 20V 5A for a MacBook; plugging in a second device shifts USB-C2 or USB-A to a 95W + 5W low-current mode after one minute at or below 5W, safely charging earbuds or an iPhone 16/17.

What does the 100W maximum actually provide when I connect a laptop?

The charger sustains a steady 100W output on any USB-C port up to twice as long as typical 100W chargers, so a MacBook receives full 20V 5A power for demanding workloads without throttling.

Does the 100-240V 2.3A input limit charging speed abroad?

The wide 100-240V 50/60Hz input with 2.3A max draw lets the GaN charger deliver its full 100W output worldwide; the foldable plug and 330% smaller frame make it travel-ready without voltage concerns.

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