For the same battery, with the same remaining capacity, the voltage value changes due to the magnitude of the discharge current.
The higher the discharge current, the lower the voltage. In the absence of current, the voltage is highest. The influence of ambient temperature on battery voltage. The lower the temperature, the lower the voltage of the battery of the same capacity.
The higher the charging current, the higher the lithium battery voltage.
Overcharging is certainly bad for the battery, but it shouldn't be a big deal problem once or twice. that the quality of your battery is not good. Not so good, ordinary lithium batteries are charged at 4.2~4.25V, not higher, and the charging current cannot be higher than half of the rated capacity value. Loading too fast. it's definitely not good for the battery.
The more the charging current ist, the higher the voltage, which is beneficial for lithium batteries. According to relevant public information, the higher the charging current, the higher the voltage, which is beneficial for lithium batteries. During charging, the current will release the electrolyte to the battery and the voltage will help the electrolyte to be stored in the battery, making full use of the capacity to accelerate charging.