Battery Holder / Battery Spacer for 18650 1 x 1 with 18.4mm Bore Diameter

Product Description The 18650 Battery Spacer is a modular, interlocking bracket designed for assembling custom lithium-ion battery packs with professional-grade stability. Unlike traditional glue-based assembly, these spacers create a rigid mechanical structure that maintains precise 20mm centre-to-centre spacing between cells. This gap is critical for passive air cooling, preventing thermal runaway during high-discharge applications. Each unit features "male" and "female" dovetail slots on all four sides, allowing you to snap multiple spacers together to form any configuration—from a simple 1S2P pack to massive 10S10P arrays for electric vehicles or power walls.

Key Features

• Modular Interlocking System: Innovative dovetail edges allow for tool-free assembly of cells into any geometric shape or size.

• Enhanced Thermal Management: Naturally creates an air gap between cells, significantly improving heat dissipation compared to taped packs.

• High Impact Resistance: Molded from crack-resistant ABS plastic that protects cells from mechanical shocks and vibrations in mobile robots.

• Universal Fit: Precision-engineered 18.4mm hole diameter ensures a snug, slip-free fit for all standard 18650 lithium-ion cells.

• Flame Retardant Material: Constructed from UL94-V0 rated plastic to provide an extra layer of safety in high-power energy storage systems.

Technical Details

• Cell Pitch: Maintains a consistent 20.2mm pitch, providing the perfect clearance for spot-welding standard 0.15mm nickel strips.

• Vertical Stability: The 8mm height provides sufficient lateral support to prevent cells from tilting or shifting during assembly.

• High Temperature Tolerance: Engineered to withstand ambient temperatures up to 80°C without deformation or losing structural integrity.

• Chemical Resistance: ABS material is resistant to common battery electrolyte leaks and workshop cleaning agents.

• Lightweight Design: Adds negligible weight to the battery pack, making it ideal for drones and portable power electronics.

• Precision Molding: Zero-flash injection molding ensures smooth edges that won't tear the delicate PVC insulation of the battery cells.

• Alignment Accuracy: Guarantees perfectly parallel cell orientation, which is essential for uniform current distribution across busbars.

• Versatile Configuration: Compatible with both square (grid) and staggered (honeycomb) packing layouts.

• Internal Ribbing: Features small internal grip ribs to compensate for minor variations in battery diameter across different brands.

• Standardized Sizing: 20mm outer dimension allows for easy calculation of the total battery pack footprint.

• Tool-Free Locking: Snap-lock mechanism provides a tactile "click" once the spacers are securely joined.

• Safety Isolation: Prevents physical contact between the metal casings of adjacent cells, reducing the risk of internal short circuits.

• DIY Friendly: Optimized for use with handheld spot welders and pre-cut nickel strips.

• Industrial Durability: Built to withstand the compression forces of heat-shrink tubing and external battery enclosures.

• Non-Conductive: Pure plastic construction ensures zero electrical interference with the battery terminals.