Should I change the battery when the battery of Apple's mobile phone is less than 80%?

If the battery of Apple's mobile phone is less than 80%, it must be replaced. Generally, after the health of the iPhone battery is lower than 80%, the battery needs to be replaced. When the health is lower than 80%, the system will force the performance management function to be turned on, and the mobile phone will get stuck in some cases. This restriction can only be lifted by replacing the battery. This is not only for battery life, performance considerations, but also safety factors. Methods to delay the aging of Apple mobile phone battery. 1. When charging, use original or MFI-certified charger. 2. Try not to charge the mobile phone below 20%. 3, try not to over-discharge, the phone prompts that the power is insufficient and should be charged.