Huawei's mobile phone battery health is 99% in the normal range, indicating that the battery is in good condition. Battery health is calculated according to the number of charge and discharge times and the degree of battery capacity attenuation. During normal use, the battery will gradually decay, and the decline in health is normal. 99% health means that the battery capacity loss is small and it can still provide good endurance. Only when the health level drops below 90% should you consider replacing the battery.