DIY 3x18650 Power Bank Case with Dual USB Fast Charge & LED Light

Turn spare batteries into portable power whenever you need it. This 18650 battery charger case lets you build your own reliable power bank using three 18650 cells, giving you flexible, cost-effective charging on the go. Designed for tech enthusiasts and practical users alike, this DIY power bank box features dual USB output and 5V 2A fast charging for phones, tablets, and small devices. With a built-in LED night light, it’s more than storage—it’s a smart, multifunction travel companion.

Key Features

• Supports 3 x 18650 lithium batteries (not included)

• Dual USB output for charging two devices simultaneously

• 5V 2A fast charge power bank case performance

• Built-in LED night light for emergency or outdoor use

• Compact, durable battery storage box design

Why Choose Our DIY 3x18650 Power Bank Case with Dual USB Fast Charge & LED Light

Unlike pre-built power banks that lose capacity over time, this 18650 power bank DIY kit allows you to replace batteries as needed. It’s cost-efficient, customizable, and ideal for users who already own compatible cells. The added LED light feature makes it practical for camping, travel, and power outages.

Perfect For (Occasions & Uses)

• DIY tech projects and electronics enthusiasts

• Travel and daily commuting

• Emergency backup power at home

• Camping and outdoor adventures

How It Works

Insert three compatible 18650 batteries into the case, close the secure cover, and connect your device via USB. The LED indicator displays charging status, while the built-in light can be activated when needed.

Product Specs

• Battery Type: 3 x 18650 lithium (not included)

• Output: Dual USB 5V 2A

• Features: LED night light, battery indicator

• Use: Portable charging and battery storage

Build Your Power, Your Way

Upgrade your charging setup with this DIY 3x18650 Power Bank Case. Add your own batteries, power your devices anytime, and enjoy flexible energy wherever life takes you.