"Oh, really? My phone battery's been swelling lately. What's usually the reason for that?" Li Qing asked curiously.
"Actually, nowadays most phones have built-in, non-removable batteries, and the original battery shouldn't show this kind of issue. Sir, you probably bought a battery online and replaced it yourself, right?"
The shop assistant explained with a smile: "However, there are still many reasons why a battery might swell.
For example, charging for a long time and not unplugging the charger; using different types of chargers multiple times; frequently plugging and unplugging the charger irregularly; unstable charging voltage; different standards between countries; more than two chargers working at the same time; mixing direct and alternating current; using other cooling devices during charging, causing the battery to become extremely unstable; and lastly, charging too frequently, resulting in a scorched and blackened port."
