3×18650 Battery Power Bank Case Rechargeable Battery Holder with 3 USB Ports for Custom Power Projects

Specification:

• Number of Cells: 3 × 18650 Li-ion
• Output Ports: 3 × USB ( V each)
• Case Material: flame-retardant ABS plastic
• Connection: wired cell slots with springs or solder tabs
• Protection: reverse polarity and overcurrent protection
• Wire Length: ~100–150 mm
• Ventilation: slot openings for heat dissipation
• Mounting: screw holes or adhesive backing
• Dimensions: compact for portable use
• Compatibility: fits standard 18650 cells

Description:
This 3×18650 Battery Power Bank Case provides a safe and efficient way to build custom power banks with three USB output ports. The flame-retardant ABS housing ensures safety and durability. Reverse polarity protection safeguards cells. Ideal for DIY electronics, outdoor gear, and emergency power needs. ASCII-labeled ports make it easier to integrate with battery management systems.