🔋⚡ 18650/21700 Battery Power Bank Case – 1 Slot USB Type-C DIY Charging Module

🚚 FREE SHIPPING INSIDE UK 🇬🇧

Turn a compatible rechargeable battery into a convenient portable power solution with this 1-slot DIY power bank case. 🔋 Designed for compatible 18650 or 21700 Li-ion batteries, it features a USB Type-C port and compact portable design with a lanyard.

⭐ Key Features

• 🔋 1-Battery Slot – Designed for one compatible 18650 or 21700 battery.

• ⚡ DIY Power Bank Module – Create a compact portable power supply using a suitable rechargeable cell.

• 🔌 USB Type-C Port – Convenient modern charging/output connection.

• 📱 Portable Charging – Suitable for powering compatible USB devices when correctly assembled.

• 🎒 Compact Design – Easy to carry in a bag or pocket.

• 🪢 With Lanyard – Convenient for carrying or attaching to suitable items.

• 🛠️ DIY Friendly – Useful for electronics projects, repairs and portable power applications.

🎨 Available Colours

Choose from:

• 🖤 Black

• 🤍 White

• 🩷 Pink

• 💚 Green

📌 Please select your preferred colour from the variation menu before ordering.

🔧 Battery Compatibility

Designed for use with one compatible rechargeable Li-ion battery:

• 🔋 18650

• 🔋 21700

⚠️ Battery is not included unless specifically stated in the selected listing option.

💡 Perfect For

• DIY power bank projects

• Electronics hobbyists

• Portable power solutions

• USB-powered devices

• Emergency power projects

• DIY repairs & modifications

• 🎁 Gifts for electronics enthusiasts

📦 Package Includes

1 × 1-Slot Battery Power Bank Case / Module
1 × Lanyard

Battery not included.

⚠️ Important Safety & Compatibility Notes

• Battery NOT included.

• Use only a suitable, compatible rechargeable Li-ion battery.

• Check the battery type, size and polarity before installation.

• Do not use damaged, swollen or leaking batteries.

• Do not mix different battery types or cells.

• This is a DIY electronic module and should be used correctly.

• Do not short-circuit the battery or module.

• Please check your device's voltage and power requirements before connecting.

🚚 Shipping

🇬🇧 Free shipping inside UK
📦 Carefully packed before dispatch
⚡ Convenient UK delivery

💙 Why Buy From Flow-Balance's?

✔️ Quality products
✔️ Great value for money
✔️ Carefully selected electronics & DIY accessories
✔️ Friendly customer service
✔️ Trusted seller focused on customer satisfaction

✨ Shop confidently with Flow-Balance's – quality products, great service and a positive shopping experience! ✨