Battery Spacers - Series Connection - Turn Flat Tops into Button Tops - Fill Empty Space 14500/18650/21700/26650

🔋 PCB Battery Spacer – Series Connection Filler Price is for 1pcs. Got a little gap in your battery setup? These PCB spacers add just the right amount of length to keep your batteries snug and your series connections solid. No rattling, no weak contact – just a secure fit every time. ✨ Features: Fills the gap in series connections for a solid fit Adds extra length to keep batteries tight Safe PCB design with conductive pads only where needed Prevents rattling and keeps your setup stable 📏 Available Sizes (by battery type): 14mm – for 14500 cells 18mm – for 18650 cells 21mm – for 21700 cells 26mm – for 26650 cells 🔧 Use it for: Flashlight mods 🔦 DIY battery packs 🔋 Custom electronics projects ⚡