The question is ‘how you charge them’.Then you say ‘what could possibly go wrong’ ? But it turns out some of our habits that are deadly damage to those precious Lithium-ion Batteries.
Don’t Charge to 100%
Maintaining a full charge is not the most efficient way to keep your phone battery strong. In fact, experts suggest letting your phone coast through the day between 30 and 80 percent full. That’s where it’s most comfortable and will run most efficiently. So stop charge it overnight, and instead go for shorter and more frequent bursts throughout the day.
Don’t allow your phone to die
Lithium ion batteries become volatile when they drop down to low power, so you should avoid getting that “low battery” warning too often. Apple and other experts suggest you let it fully run out of battery every one to two months to “calibrate” the battery gauge.
Don’t overheating your battery
Overheating your battery is also a one of the problem for your phone That’s because of iPhone batteries really, really hate extreme temperatures, and have to work extra hard in high heat or cold. According to Apple, the “comfort zone” for iPhones (as well as iPads, iPods, and Apple Watches) is between 32 and 95 degrees. your phone basically needs to be bundled up and cooled off on the regular.
Using your wireless charger too much
Both your battery and the case itself emit heat during charging, which can do long term damage your phone. To avoid overheating, try a portable power source that doesn’t attach to your phone.
Leaving your case on while you charge
If your phone feels too hot when it’s plugged in, it’s possible your fancy case might be trapping the heat that’s produced while charging. So Please take it your phone cover.
Storing your backup phone without a charge
According to Apple, leave the battery completely depleted it will fall into what’s known as a “deep discharge state,” which will render it less capable of holding a charge in the future. Conversely, if you store it fully charged for an extended period, it may lose some capacity as well.
Using the wrong charger
Your Apple-issued charger is designed to cut power when the battery hits 100%, but those cheap unauthorized third-party USB cords are not, and may do some damage by excessively draining the battery and it will kill your battery.