Should I Let My New Iphone Battery Die Before Charging. You should not let a Lithium chemistry battery fully discharge. The environmental temperature and the percentage of charge on the battery when its powered down for storage.

On the same line try to avoid charging your iPhone while it is in its case since it will make it hotter which is not good for the battery at all. The best thing to do to extend the battery life of your device is to operate it between a charge range. Putting it on a charger also means to save the battery.
If you want to store your device long term two key factors will affect the overall health of your battery.
Draining a battery completely can cause permanent damage. Theres no need to let it discharge 100 before recharging. If this happens youll need to charge the battery more frequently and it may last only a few hours before needing a charge for example. Depending upon the length of time between when the iPhone was made and when it is activated your battery capacity may show as slightly less than 100.
