I believe many people have many questions about the household solar energy storage system. For example, if there is no solar panel, my wall mounted lithium battery can be used, can it store electricity? The answer is yes, as shown in the figure below

The household powerwall lifepo4 solar generation system consists of photovoltaic array composed of solar cell modules, solar charge and discharge controller, battery pack, off grid inverter, DC load and AC load. If the output power supply is AC 220V or 110V, an inverter is also required.
The photovoltaic array converts solar energy into electric energy under the condition of light, and supplies power to the load through the solar charge and discharge controller, while charging the battery pack; When there is no light, the 48v 100ah battery pack supplies power to the DC load through the solar charging and discharging controller, and the battery also supplies power directly to the independent inverter, which inverts the current to supply power to the AC load
After understanding the operation principle of the household wall mounted energy storage system and combining the above pictures, it can be clearly understood that the wall mounted lithium battery can store energy and supply power to the household load through the mains even if there is no solar panel