20000mAh Power Bank Case – Portable External Battery Charger

Build your own reliable backup power with this 20000mAh power bank case, designed for outdoor use, travel, and everyday emergencies. Featuring an LCD digital display, dual USB output, and LED flashlight, this portable charger case delivers convenience, visibility, and flexibility in one compact design.

Quick Picks: VIVO Magnetic Wireless Power Bank | Fast Travel Charger · ASOMETECH 50000mAh 100W Power Bank | Laptop Fast Charger

20000mAh power bank charging box with LCD display dual USB and Type-C ports

⚠️ Batteries not included – requires 6 × 18650 flat-head batteries (no protection plate).

🔋 Key Features

• Large 20000mAh Capacity – Ideal for extended trips and emergency power

• LCD Digital Display – Monitor battery level, voltage, and current in real time

• Dual USB Output – Charge two devices simultaneously

• Multiple Input Interfaces – USB, USB Type-C, and Micro USB supported

• LED Flashlight – Built-in light for outdoor or emergency situations

• Plug & Play Design – Easy installation and operation

• Lightweight Plastic Shell – Portable and travel-friendly construction

📱 Wide Compatibility

• Smartphones & mobile phones

• Portable electronics & USB-powered devices

• Compatible with DIY external battery setups

⚙️ Specifications

• Battery Type: Li-Polymer (case compatible with 18650 batteries)

• Capacity: 20000mAh

• Input: 5V / 2A

• Output: 5V / 2A

• Interfaces: 2 × USB, 1 × Type-C, 1 × Micro USB

• Battery Requirement: 6 × 18650 flat-head batteries (not included)

• Shell Material: Plastic

• Certification: CE

• Size: 14.5 × 7.6 × 2.2 cm

• Weight: Lightweight portable design

👍 Pros & Cons

Pros: Large capacity, dual USB output, LCD display, LED flashlight, portable design
Cons: Batteries not included; confirm battery type before installation

🌍 Why Choose This Power Bank Case?

Compared to standard power banks, this DIY power bank charging box offers flexibility, clear battery monitoring, and dual-device charging—perfect for outdoor adventures, travel, or backup power needs.

🛒 Add to cart now — limited availability!
A smart choice for users who want customizable, high-capacity portable power.

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• VIVO Magnetic Wireless Power Bank | Fast Travel Charger
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The 20000mAh Power Bank Case is a 20000mAh DIY power bank case with dual USB output, LCD display, and built-in LED flashlight for reliable backup power on the go.