PowerCore™ 21700 DIY Power Bank Case

Build Your Own Power Bank • Fast Charging • LCD Display

Create a powerful portable charger with the PowerCore™ 21700 Power Bank Case. Designed for DIY enthusiasts, it supports up to 4× 21700 flat-top batteries (not included), giving you a customizable power solution for everyday charging.

Fast Charging Support⚡

Supports Type-C input and multiple fast charging outputs to power your devices quickly and efficiently

🔋 Smart LCD Display

The built-in digital screen shows the real-time battery level, so you'll always know how much power is available.

🛠️ DIY & Durable Design

Made from premium PC material with a compact, lightweight body that's easy to carry. Simply install compatible batteries and weld them in parallel to build your own power bank.

📦 Product Specifications

Battery Type: 4 × 21700 Flat-Top Batteries (Not Included)

Input: USB Type-C Fast Charging

Output: Multiple Fast Charging Modes

Material: Premium PC Plastic

Display: LCD Battery Indicator

Size: 95 × 52 × 47.5 mm

⭐ Why You must Have ?

✔ Supports up to 4× 21700 batteries
✔ Fast charging via USB-C
✔ LCD battery level display
✔ Compact & travel-friendly
✔ Durable premium construction

⚠️ Note: Batteries are not included. Compatible only with flat-top 21700 lithium batteries and requires battery welding before use.