Description

The Anker 347 Power Bank (PowerCore 40K) A1377H11 is an ultra-high-capacity portable charger designed for users who need dependable backup power for several devices over extended periods. Featuring a massive 40,000mAh battery, up to 30W USB-C fast charging, four charging ports, and support for both USB Power Delivery and Quick Charge technologies, it provides a powerful charging solution for smartphones, tablets, wireless earbuds, handheld gaming devices, and other USB-powered electronics.

With two USB-C ports and two USB-A ports, the Anker 347 can charge up to four devices simultaneously. This makes it especially useful for families, work teams, gaming setups, outdoor activities, extended power outages, and users carrying several devices. Each USB-C port supports both input and output, allowing you to recharge the power bank through either USB-C connection.

The 30W USB-C Power Delivery output delivers efficient fast charging for compatible iPhone, Samsung Galaxy, Google Pixel, iPad, and Android devices. The USB-A ports provide up to 18W fast charging for compatible accessories and older devices, while Anker's PowerIQ 3.0 technology automatically identifies connected equipment and provides suitable charging power.

A four-level LED battery indicator lets you check the remaining charge at a glance. The power button also activates a dedicated trickle-charging mode for safely charging low-power accessories such as AirPods, wireless earbuds, smartwatches, and fitness trackers.

Built with a durable enclosure, a stable flat-bottom design, and Anker's comprehensive safety system, the PowerCore 40K is ideal for home backup, road trips, camping, long gaming sessions, events, and professional use where reliable high-capacity portable power is essential.

Key Features

Massive 40,000mAh Battery Capacity

Enjoy extended backup power without frequently recharging the power bank.

• Huge 40,000mAh rechargeable battery
• Provides multiple full smartphone charges
• Suitable for tablets and handheld gaming devices
• Ideal for extended trips and prolonged use
• Excellent emergency power source
• Useful during electricity outages

30W USB-C Fast Charging

Charge compatible devices at high speed.

• Up to 30W USB-C output
• USB Power Delivery support
• Qualcomm Quick Charge compatibility
• Fast charging for smartphones and tablets
• Suitable for selected USB-C handheld gaming devices
• Backward compatible with lower-power equipment

Four Charging Ports

Power several devices from one high-capacity battery pack.

• 2 × USB-C ports
• 2 × USB-A ports
• Charge up to four devices simultaneously
• Supports modern and legacy USB devices
• Convenient for families and multi-device users

Dual USB-C Input and Output

Both USB-C ports offer flexible two-way charging.

• Recharge the power bank through either USB-C port
• Use either USB-C port to charge connected devices
• Up to 30W USB-C input
• Up to 30W USB-C output
• Simplifies cable and port selection

PowerIQ 3.0 Technology

Anker's intelligent charging system provides optimized power for compatible devices.

• Combines Power Delivery and Quick Charge support
• Detects connected equipment
• Adjusts charging output automatically
• Supports a wide range of smartphones and accessories
• Provides efficient charging performance

Charge Up to Four Devices Simultaneously

Keep your essential devices powered together.

• Charge two USB-C devices
• Charge two USB-A devices
• Suitable for phones, tablets, earbuds, and accessories
• Total shared output of up to 30W
• Maximum 3A per port during shared charging

Trickle-Charging Mode

Provide safe and stable charging for low-power accessories.

• AirPods and wireless earbuds
• Smartwatches
• Fitness trackers
• Bluetooth accessories
• Other low-current USB devices

Press the power button twice to activate trickle-charging mode, then press it once to exit.

LED Battery-Level Indicator

Check the remaining battery capacity quickly.

• Four LED battery indicators
• Displays approximate remaining charge
• Simple one-button operation
• Convenient for planning when to recharge

Advanced Safety Protection

Anker's MultiProtect system combines multiple protection features to safeguard the power bank and connected devices.

• Overcharge protection
• Overcurrent protection
• Overvoltage protection
• Short-circuit protection
• Temperature monitoring
• Battery-cell protection
• Intelligent charging management
• Ten integrated safety features

Wide Compatibility

Compatible with many popular USB-powered devices, including:

• iPhone 13, 14, 15 and 16 Series
• Samsung Galaxy smartphones
• Google Pixel devices
• iPad and iPad Pro
• Android tablets
• Nintendo Switch
• Steam Deck and compatible handheld devices
• AirPods and wireless earbuds
• Apple Watch and smartwatches
• Bluetooth speakers
• Cameras
• Mobile gaming accessories
• USB-powered devices

Specifications

What's Included

• Anker 347 Power Bank (PowerCore 40K)
• USB-A to USB-C Charging Cable
• Quick Start Guide
• Warranty Documentation

Wall charger may be sold separately. Use a compatible 30W USB-C charger to achieve the best power bank recharging performance.

Best For

• Users who need maximum battery capacity
• Emergency home backup charging
• Extended electricity outages
• Family and group charging
• Camping and outdoor activities
• Road trips
• Long gaming sessions
• Smartphones and tablets
• Nintendo Switch and handheld consoles
• Content creators
• Events and exhibitions
• Business and field work
• Charging several devices simultaneously

Why Choose the Anker 347 Power Bank?

• Massive 40,000mAh battery capacity
• Up to 30W USB-C fast charging
• Two USB-C and two USB-A ports
• Charge up to four devices simultaneously
• Both USB-C ports support input and output
• PowerIQ 3.0 charging technology
• USB Power Delivery and Quick Charge support
• Trickle-charging mode for smaller accessories
• Four-level LED battery indicator
• Ten integrated safety protections
• Durable, high-capacity design
• Excellent for emergencies and extended use
• Reliable Anker charging technology