Years ago, the Samsung Galaxy Note 7 became infamous when the battery caught fire in several incidents. There have been similar, albeit isolated, incidents since then. However, despite the coverage of high-profile batteries have been wrong, most of the Li-ion batteries are safe. The chemical reactions that occur in lithium-ion cells are complex, but in any battery, there are negatives and positives. electrode. In lithium batteries, the negative is the lithium-carbon compound, and the positive is cobalt oxide (although many battery manufacturers are moving away from cobalt). These two compounds cause a safe reaction when controlled and deliver energy to your device. When the reaction is out of control, you will experience ear buds in your ears. What changes a safe reaction to an uncontrolled reaction can be many things: excess heat, physical damage during use, physical damage during manufacturing, or using the wrong charger. Dozens and dozens of batteries are: Avoid cheap cables, chargers, and outlet adapters. Make sure the battery is not exposed to excessive heat (over 110 degrees). Fahrenheit).Check your battery regularly for signs of wear and tear.Avoid cheap outlet adapters, cables, and chargers is paramount. This is the most likely source of the problem. That charger you saw on Amazon for $20 less than the competition? Not worth it. They probably cut prices by reducing insulation, leaving out power management tools, and ignoring the basics of electrical safety. Price alone does not guarantee safety, either. Buy from reputable companies and brands. Then there was the heat. Too much can cause various problems, both in terms of discharge and safety. Do not overheat, and pay attention to the battery when charging. If the device gets very hot while charging, this could be a sign of a problem. Also, watch out for swollen, bulging, or deformed batteries.