Solar power generation panels cannot supply power to electrical equipment normally without using batteries.

The reasons are:
1. Solar power panels are only devices that convert light energy into electrical energy, and cannot store electrical energy.
2. When the light is strong, the solar power panel can generate a higher electromotive force; when the light is weak, it can only generate a lower electromotive force. That is, the output voltage is very unstable and cannot supply power to the electrical equipment normally.
Therefore, the solar power generation system must be composed of solar power panels, voltage conversion modules and batteries.
Among them, the voltage conversion module converts the unstable voltage generated by the solar power generation panel into a voltage suitable for charging the battery, and then charges the battery.
The electrical equipment obtains a relatively stable supply voltage from the battery.