18650 3×1 Battery Cell Spacer/Holder a cylindrical battery spacer, made by flame retardant ABS PC materials, with high-temperature resistance and crack resistance. There are slots on the edge of the holder, can be combined into many different sizes and shapes of the battery pack; after welding nickel tabs, the pack can pass vibration test without any other connecting device. Making your battery pack Solid and Reliable! This Battery Holder is compatible with our 18650 Li-ION Batteries which you need to buy separately. Note!! Every Single battery cell needs 2 Spacer for one up and one down buy it accordingly.  Features : There are slots on the edge of the holder to combined them into many different sizes and shapes of the battery pack. Application: Design for Radiating Complex Battery Packs. Safe and Stable, Perfect Build for eBike! Advantage: Very simple to operation Very flexible, it is easy to assemble any type of battery packs Radiating during high rate discharge. Makes your battery pack Solid and Reliable! Package Includes : 1 x 18650 3×1 Battery Cell Spacer/Holder-5Pcs. SKU: PGI-00130309 Category: Battery Holder