Why You Should NEVER Leave a Power Bank Charging Overnight (Firefighter Explains)

I spent 30 years as a fire captain, and I’ve seen how quickly a damaged lithium battery can become dangerous. In this video, I explain why I never leave a power bank charging overnight—and the warning signs I look for before using one. I’ll show you how I check suspicious capacity labels, detect swelling and hidden damage, understand heat damage from cars, inspect charging cables, and charge power banks safely. I’ll also explain why airlines restrict power banks in checked luggage, why soft surfaces and bags are risky, and what I do with a puffy or damaged battery. 0:00 Why Overnight Charging Is Risky 0:40 Spot a Lying Label 2:34 Charging Both Ways 4:18 Heat Damage in Cars 6:02 Hidden Damage From Dents 7:42 Why Airlines Ban Checked Banks 9:55 What To Do With Puffy Banks 10:52 Replace Damaged Charging Cables 12:46 Never Charge on Soft Surfaces 14:25 Keep Banks Out of Bags 16:31 The Safe Charging Routine #PowerBankSafety #FireSafety #LithiumBattery #BatterySafety #HomeSafety