Power Bank Case Battery Box Mobile Phone Charger DIY Shell Case Charging Storage Case

This DIY power bank case is perfect for creating a custom portable charger using 3×18650 flat-head batteries (not included). The transparent design allows you to see the circuit board and ensures a compact, stylish appearance. Dual USB output lets you charge two devices simultaneously, while dual input (Micro + Type-C) provides convenient charging options. The solder-free setup makes assembly simple—just insert your batteries and start using your DIY power bank.

Important Notice:

• This is a DIY power supply set (circuit board + shell), not a finished power bank.

• Batteries are not included (requires 3×18650 flat-head batteries).

• All batteries must have the same capacity.

• Insert batteries correctly: shrapnel = positive, spring = negative.

• Once closed, the shell cannot be reopened. Test charging before sealing.

Specifications:

• Battery: 3×18650 (not included)

• USB Output: DC 5V/2A

• Micro Input: DC 5V/2A

• Type-C Input: DC 5V/2A

• Size: 8.75 × 7.6 × 2.4 cm

Package Includes:

• 1 × 3×18650 Battery Box (without battery)