Many friends will confuse power supply adapter products and chargers, thinking that they can both charge electronic products, but in fact these two are different, their definitions, structural composition, current mode, etc. have certain differences, the biggest difference between the two That is, the charger only charges the battery, and the power supply adapter products can not only charge the battery, but also power the host. The power supply adapter products cannot be used as a charger, otherwise it may cause the battery to fail to charge or damage the battery life due to too much charging current.

Charging the battery with a power supply adapter product or a regulated power supply may cause the following conditions:
1. If the voltage output is not large enough, there will be insufficient charging or slow charging.
2. If the output voltage is sufficient, there will be a huge charging current when the voltage of the charged battery is low in the early stage of charging, which will seriously damage the battery life.
Therefore, charging should be done with a regular charger, not a power supply adapter product. If it is improvised, at least a certain current-limiting resistor should be connected in series, and the charging current should not be too high by increasing the internal resistance. Of course, the exception is the adapter specially made for charging. Although the mobile phone power supply adapter products has no constant current function, these functions are integrated inside the mobile phone, so it can also be used.