12V Battery Pack Case for 18650 Cells | 21-Cell 12.6V DIY Battery Storage Box

Specification:
Supported Battery Type: 18650 Li-ion cells
Cell Capacity: Fits 21 pcs (3S7P or custom configuration)
Output Voltage: 12.6V (for 3S battery pack)
Terminal Type: Heavy-duty metal terminals
Material: High-quality ABS plastic
Color Options: Green, Blue And Black
Cover Type: Snap-fit protective lid
Usage: DIY battery pack enclosure
Heat Resistance: Stable under charging load
Approx Weight: 180g