DIY 18650 Power Bank Case – Dual USB, LED Night Light

Build Your Own Power Bank – 3×18650 DIY Charging Case

Take control of your portable power with this 3×18650 DIY Power Bank Case. Designed for makers, tech enthusiasts, and everyday users who want a customizable charging solution, this solder-free battery box lets you assemble your own high-capacity power bank in minutes — no tools or technical expertise required. Simply insert three 18650 flat-head lithium batteries (sold separately) and you're ready to fast-charge two devices simultaneously.

⚠️ Important Notes Before You Buy:

• Batteries are NOT included — only the DIY battery box/case.
• Only compatible with 18650 flat-head lithium batteries.
• This is a non-removable shell — once assembled, it cannot be disassembled. Assemble carefully the first time!
• Do not insert batteries in reverse — doing so will damage the circuit board.
• All installed batteries must have consistent capacity ratings.

Key Features

• Dual USB Output: Charge two devices at the same time with 5V 2A output per port.
• Micro + Type-C Dual Input: Flexible recharging options for the case itself.
• 10W Fast Charging: Rapid charge and discharge capability keeps your devices powered up quickly.
• LED Night Light: Built-in warm LED with 4 adjustable brightness levels — a handy companion for camping, travel, or bedside use.
• Large Screen Digital Display: Real-time battery percentage readout so you always know how much power remains.
• Solder-Free Assembly: No soldering required — a straightforward plug-and-play DIY build.
• Transparent Shell: Sleek, tech-forward aesthetic lets you see the internals.
• Hanging Rope Design: Convenient lanyard loop for easy carrying on the go.
• Multi-Layer Safety Protection: High-quality components with low-temperature fast charging to protect both the case and your devices.

Technical Specifications

What's in the Box

• 1 × 18650 DIY Power Bank Case (batteries NOT included)

Made in Mainland China.

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For guidance on the safe use and handling of lithium-ion batteries, visit the U.S. Consumer Product Safety Commission (CPSC) – Lithium-Ion Battery Safety Information.

Learn more: Anker

Frequently Asked Questions

Q: Are the 18650 batteries included with this DIY power bank case?

A: No, the batteries are not included. You will need to purchase three 18650 flat-head lithium batteries separately. Make sure all three batteries have the same capacity rating for safe and optimal performance.

Q: Can I use button-top (non-flat-head) 18650 batteries?

A: No. This power bank case is only compatible with 18650 flat-head lithium batteries. Button-top batteries will not fit correctly and may damage the circuit board.

Q: How do I recharge the power bank case itself?

A: The case supports dual input recharging via a Micro USB or Type-C cable at 5V 2A, giving you flexibility depending on the cable you have available.

Q: Can I disassemble the case once assembled?

A: No — this is a non-removable shell. Once the case is assembled, it cannot be taken apart again. Take your time during assembly and follow the instructions carefully to avoid mistakes.

Q: What is the LED night light feature used for?

A: The built-in warm LED night light offers 4 adjustable brightness levels. It's perfect for use as a bedside light, during camping trips, or any situation where you need a soft, portable light source alongside your charging needs.