After that, trickle charging will be slow, and it will take a long time to reach 100%. In addition, it is not recommended to charge the battery to 100%, which will increase the number of battery cycles and lead to the decline of battery health. Therefore, it is generally enough to charge it to 30%~80%. Overfilling will lead to a decline in health.
Iphone 13 battery health
1. If the number of battery cycles does not exceed 500, but the battery health of Apple's mobile phone drops to 80% within one year after purchasing the mobile phone, it indicates that there is something wrong with the battery quality of the mobile phone. In this case, you can apply to Apple for free battery replacement after sale. If the mobile phone has purchased the AppleCare plan, you can apply for battery replacement within two years of using the mobile phone.
2. If the user frequently uses the mobile phone while charging, especially watching videos or playing games, the battery will be excessively damaged due to frequent charging and discharging, resulting in a sharp decline in battery life. If the health of the battery decreases and the user chooses not to replace the battery, the performance of the mobile phone will be limited to ensure the life of the battery.