1. The output voltage of the charging treasure is not enough. This is determined according to the principle of charging, it must be high voltage flow to low voltage, the mobile phone is generally 3.7V, the mobile power supply lithium battery is 3.7V, so it is flat, so the mobile power supply will be boosted to 5V when the output voltage, so that high voltage flow to low voltage, charging.
2, the power bank output current strength is not enough. This phenomenon occurs when the current strength is not enough, which is closely related to the voltage, and the most fundamental is caused by the poor quality of lithium cells.
3, related to the PCBA protection board of the mobile power supply. In the first point mentioned, the protection board to play the function of over flow charge over discharge, and there is an MCU, this is used to boost the voltage, if the quality of the protection board is not good, it is unstable when the current passes through, leading to PCBA work, and then lead to the charging treasure can not be charged, the above situation occurs.
Possible reasons are as follows:
First, the charging bank is damaged, it is recommended to change a charging bank to try
Second, the mobile phone or other charging equipment is damaged, such as the interface of the charging device has problems with poor contact, which will also cause this phenomenon
Third, the data cable used for charging is damaged, and the data cable needs to be replaced
Because the capacity of the electrolyte is insufficient, the charging treasure has just been plugged in to display charging, and it is broken for a while, because the electrolyte capacity of the charging treasure is insufficient, and it cannot provide a complete charging service, and the electrolyte needs to be added