Modular 18650 Battery Spacers – Build a Professional Battery Bank, Don’t Just Improvise
You have the cells. You have the blueprint. What you need is a reliable, scalable structure to keep everything securely in place. These modular spacers for 18650 Li-Ion cells are the perfect solution—no glue, no messy improvisations, and no wasted time.
Note: These spacers are designed exclusively for the mechanical mounting of cells. Nickel strips, connecting wires, and other electrical components are not included and must be purchased separately.
Why choose this set? (Key Advantages):
- Universal 18650 Compatibility — Designed to fit Samsung, LG, Panasonic, Sony, Molicel, and any other manufacturer adhering to the standard 18 × 65 mm size.
- Tool-Free Assembly — The spacers snap together directly; you can assemble a 40-cell bank in under 15 minutes.
- Anti-Crack Slot Design — Cells fit firmly without excessive pressure, preventing damage to the battery wrap or labels.
- Ultra-Lightweight (0.5g per piece) — 100 spacers add less than 50g to your total pack weight, which is critical for mobile applications like e-scooters and e-bikes.
- 20 × 20 mm Format — Maximises density in minimal space, ideal for compact packs within standard enclosures.
- 100-Piece Set — Enough for a 10S10P bank or two separate 50-cell packs.
Details and Performance
Each piece is injection-moulded from impact-resistant ABS plastic—the same material used in industrial electronic housings. It won’t crack during repeated assembly and handles the normal thermal variations of cells during operation. The modular interlocking system allows you to build any topology: series, parallel, or mixed (e.g., 7S4P, 10S4P, 13S6P) without needing to redesign your layout. The total weight of a full 100-piece set is under 55g—a real advantage when every gram counts for e-bikes, e-scooters, and electric mobility projects.
| Parameter | Detail |
|---|---|
| Cell Compatibility | Li-Ion 18650 (standard 18 × 65 mm) |
| Material | Impact-resistant ABS plastic |
| Dimensions per spacer | 20 × 20 mm |
| Weight per piece | ~0.5 g |
| Mounting System | Anti-crack slotted edges |
| Assembly Type | Modular, tool-free interlocking |
| Quantity per set | 100 spacers |
| Main Applications | Off-grid solar, UPS, e-bikes, e-scooters, DIY, prototyping |
Package Contents
- 100 × Modular 18650 Li-Ion cell spacers (ABS plastic)
Frequently Asked Questions
Does this work with any 18650 cell, regardless of brand?
Yes. Any cell that meets the standard 18 × 65 mm size will fit perfectly—including Samsung 30Q, LG HG2, Panasonic NCR, Sony VTC, Molicel P42A, and others.
Can I build a series-parallel pack with these spacers?
Yes. The modular design supports any configuration—10S4P, 13S6P, or any other topology. You simply add your own electrical connections (nickel strips, wires) separately.
Does the ABS withstand the heat generated by batteries during charging?
Yes, for normal operating temperatures of 18650 cells (up to 60°C). If your pack operates at high currents without active cooling, ensure you include a ventilation system—this is a general safety requirement, not a limitation of the spacer.
How many cells can I fix with one set?
Exactly 100—one spacer per cell. For larger projects, you can combine multiple sets; the price per unit remains the same.
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