DIY 11.1V Li-ion Battery Pack from Scrap Laptop Cells | Full Build + Load Test | Glitch in Bits

In this video, I build a custom 3S (11.1V) battery pack using salvaged 18650 cells from an old laptop battery! 🔋 What's covered: Components required (cells, battery holder, BMS, heat shrink tubing) Connection diagram explained (3S configuration) Soldering the battery pack Load testing the finished pack This is a great beginner-friendly project if you want to repurpose old laptop battery cells into a usable power pack for your electronics or robotics projects. I walk through the wiring, safety precautions while soldering lithium cells, and how the BMS protects the pack from over-charge/over-discharge/short circuit. 🛠️ Components Used: Salvaged 18650 Li-ion cells (3S configuration) 3S battery holder 3S BMS (Battery Management System) Heat shrink tubing Soldering iron & accessories ⚠️ Disclaimer: Working with lithium-ion cells can be dangerous if done incorrectly. Please take proper safety precautions, use a BMS, and never leave charging cells unattended. #DIY #BatteryPack #Electronics #18650 #BMS #Soldering #Lithium #GlitchInBits