DIY 40x 18650 Power Bank Case – Build Your Own Massive Battery Pack! 🔋

DIY 40x 18650 Power Bank Case – Build Your Own Massive Battery Pack! 🔋

Looking for a power bank that’s not just big… but huge? The C40 DIY Power Bank Case can hold up to 40 flat-top 18650 lithium-ion cells, giving you the chance to create a portable energy station with incredible capacity.

In this video, I’ll show you:
✅ What’s included in the kit (case, screws, screwdriver, lanyard – no batteries).
✅ How to safely insert and balance the 18650 cells.
✅ Tips for insulation, battery handling, and first charging.
✅ Why this case is perfect for outdoor trips, camping, and as a backup emergency power supply.

⚡ Key Features:

No soldering required – just drop in your 18650 cells.

Up to 5V/2.1A input & output power.

Lightweight, durable housing.

Digital battery level display.

👉 Remember: Always check your batteries before installing. Make sure they’re balanced, properly insulated, and safe to use!

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