Apple uses lithium-ion batteries, so it doesn't need to take 12 hours on a first charge, as previous phones did. In theory, the apple can be fully charged for about 2.5 hours, and the best time for the first charge is when it is full (full charge), and then it can be fully full about the clock. Here are some tips on Apple battery charging:
For the first charge, the prompt is full, and it is best if the prompt is full, and then continue to charge for 15 minutes, it is best not to charge for a long time;
Try to charge the device after using less than 20% of the power, which can reduce the number of charges, improve battery life, and try to power off after full, do not charge for too long;
Charging must use Apple's own charger, do not use the charger of other products, so as to avoid damage to the iPhone device;
Charging finally use USB charging, which is better for lithium battery maintenance;
Charge after the power is less than 20%, charge to full, that is, complete cycle charge; Reduce the number of cycles is to try to be less than 20% before starting to charge, and finally, we can also do a periodic charge every month, such as automatic shutdown, and then charge to full, the interval is best not too short. Equipment electricity.