🔋 Reuse Old Laptop Batteries | 18650 Test with 12V Car Bulb & Multimeter (DIY Load Test) скачать в хорошем качестве

🔋 Reuse Old Laptop Batteries | 18650 Test with 12V Car Bulb & Multimeter (DIY Load Test)

🔋 Reuse Old Laptop Batteries | 18650 Test with 12V Car Bulb & Multimeter (DIY Load Test) Do you have old laptop batteries or 18650 lithium-ion cells lying around? Don’t throw them away! In this video, you’ll learn how to reuse and test 18650 batteries safely using a 12 V car headlight bulb and a digital multimeter — the easiest way to find good and bad cells in a 3-cell (≈12 V) pack. ⚙️ How to Test 18650 Batteries (Step-by-Step) 1️⃣ Charge each cell to 4.2 V using a proper charger (like TP4056). 2️⃣ Connect three 18650 cells in series (≈12.6 V). 3️⃣ Use a 12 V car headlight bulb as a load tester for around 1 minute. 4️⃣ Measure voltage of each cell with a digital multimeter. 5️⃣ The cell that drops fastest = ❌ Bad battery. 💡 Tip: A 5–10 W bulb gives a smoother, longer test. A 50–60 W headlight bulb drains faster and gets hot — use only for quick checks. 📏 Quick Voltage Guide Condition Voltage After Load Status 3.6 – 3.9 V ✅ Good Ready to reuse 3.3 – 3.5 V ⚠️ Weak Limited use Below 3V ❌ Bad Replace safely 🌱 Why Reuse 18650 Batteries? ✅ Save money ✅ Reduce e-waste ✅ Protect the environment ✅ Power Arduino, school projects & DIY electronics ⚠️ Safety Tips ⚡ Test on a non-flammable surface ⚡ Avoid swollen, rusted, or leaking cells ⚡ Never short-circuit or over-charge ⚡ Use proper Li-ion charging modules If you find this useful: 👍 Like • 🔔 Subscribe • ↗ Share 🎥 [InnovationGuruSmartHomeSavings YouTube Channel](   / @innovationgurusmarthomesavings  ) 📂 Other Playlists for You Smart Living & DIY Hacks 👉    • Excel & Office Productivity   Energy-Saving & Cost Efficiency Tips 👉    • Electricity Saving Tips   Electricity Saving Tips 👉    • Плейлист   #18650 #LithiumIon #LaptopBatteryReuse #BatteryTest #CarHeadlightBulb #DIYProjects #Arduino #EcoFriendly #SaveMoney #BatteryLoadTest #InnovationGuruSmartHomeSavings #SmartDIYs #RecyclingIdeas