The efficiency of millet battery will affect its performance to some extent.

If the efficiency of millet battery is lower than 80%, the performance will be affected. Because more than 80% of the battery efficiency is normal. After the first activation, the battery health of a brand-new mobile phone shows 100%. With the increase of charge and discharge times, the battery health will also decline. Therefore, millet battery efficiency below 80% will affect performance. If the battery efficiency is 85%, it is still normal, so you don't have to worry too much about replacing the battery, because the battery efficiency of Apple's mobile phone is below 80%, and then consider whether to replace it, not to mention that the battery is already a consumable, and there is not much money to replace a battery. Don't worry about the efficiency of these batteries.