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Many years ago, the Samsung Galaxy Note 7 gained notoriety when its batteries caught fire in several incidents. There have been similar, albeit distant, events since then. However, while high quality batteries have not gone well, most Li-ion batteries are safe.
What happens inside a lithium-ion cell is complicated, but like any battery, there is a negative and a positive electrode. In lithium batteries, the negative is the lithium-carbon compound, and the positive is cobalt oxide (although most battery manufacturers are moving away from cobalt). These two types of products are safe to use and provide power to your devices. When the exercises are difficult for you, you can have eardrums melting in your ears. Factors that change the safety response during uncontrolled operation can be several things: excessive heat, physical damage during use, physical damage during manufacturing, or using the wrong charger.
The three rules that have protected me (so far) from testing most batteries are:
- Avoid cheap cables, chargers, and external adapters.
- Make sure the batteries do not get too hot (over 110 degrees Fahrenheit).
- Check the batteries regularly for wear and tear.
Avoiding cheap adapters, cables, and chargers is very important. This is the cause of your problems. Chargers you see on Amazon $20 cheaper than the competition? Not eligible. They may have lowered the price by rushing to insulation, abandoning power-control devices, and neglecting the basics of electrical safety. Price alone is no guarantee of safety, either. Buy from well-known brands.
Then there is the heat. Too much of it can cause all kinds of problems, both in terms of output and security. Avoid heat, and be careful with your batteries while charging. If your device gets too hot while charging, this could be a sign of a problem. Similarly, be wary of any swollen, swollen, or discolored batteries.
