18650 Battery Pack Spacer / Soldering Jig (5S2P Configuration)

This is a precise 5S2P (5 Series, 2 Parallel) template/spacer for building a 18.5V - 21V lithium-ion battery pack using standard 18650 cells. Designed for projects like DIY power tools, e-bikes, or portable power stations. Recommended Print Settings: Material: PETG (preferred for vibration resistance) or PLA Infill: 20-30% (Gyroid/Cubic pattern) Layer Height: 0.2 mm Walls: 3-4 perimeters Supports: Not required Important Notes: Cell clearance: 0.2 mm for tight fit Cell insulation: Fish paper / insulating paper recommended between cells Compatibility: Makita BL1830 and similar 18V battery packs