Lead-acid batteries, as the most mature electrochemical energy storage technology, have always played an indispensable role in the power system. Their core value lies in their outstanding reliability and economy.

On the power generation side, lead-acid battery packs are the core of thermal power, hydropower and DC systems in nuclear power plants, providing uninterrupted power supply for relay protection devices, signal systems, emergency lighting and emergency shutdown of units, ensuring that power generation equipment can still be safely shut down in extreme situations such as power outages at the plant. In the field of power transmission and distribution, substations scattered all over the place also rely on lead-acid battery packs. As the "heart" of the DC operating power supply, it provides stable energy for the opening and closing of circuit breakers, control circuits and communication equipment, and is the "last line of defense" for the safe operation of the power grid.

In addition, lead-acid batteries, due to their mature technology, low cost and well-developed recycling system, still have a place in emerging application scenarios such as system frequency regulation and smoothing the fluctuations of renewable energy, especially in energy storage projects of specific scales.

Despite the competition from new technologies such as lithium-ion batteries,lead-acid batteries will still occupy an important position in power systems, especially in the field of critical backup power sources, thanks to their extremely high reliability and cost advantages throughout their life cycle.