Although a regulated DC power supply can charge batteries, the following points should be noted:

A regulated power supply needs to have appropriate current and voltage to charge the battery. Because different types of batteries have different charging specifications, such as lithium-ion batteries, lead-acid batteries, nickel hydrogen batteries, etc. In order to fully charge and prevent overcharging of the battery, it is necessary to choose a suitable charger, otherwise it will damage the battery.
When charging the battery, it is necessary to set the voltage and current of the regulated power supply reasonably. Normally, battery charging is completed within 2.5 to 10 hours, and the current should be based on the charging current standard specified by the battery manufacturer. Proper voltage control of battery charging status, generally ranging from 8.4-10V, to avoid overcharging and overdischarging, thereby extending battery life.
The power of the regulated power supply also needs to meet the charging requirements of the battery. For example, high-power batteries require a regulated power supply to output high power, otherwise charging will be incomplete.
In short, a regulated power supply can be used for battery charging, but attention should be paid to the charging current and voltage, and a suitable charger should be selected to ensure that it does not affect the normal service life of the battery.

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