Price of photovoltaic energy storage batteries

　　In photovoltaic power generation systems, energy storage batteries are one of the key components responsible for storing excess electrical energy and releasing it when needed. The price of energy storage batteries is influenced by various factors, including battery type, capacity, brand, and market demand. At present, the mainstream types of energy storage batteries in the market include lead-acid batteries, lithium batteries, and flow batteries.

　　Lead acid batteries are widely used due to their lower cost and mature technology, but their energy density and cycle life are relatively poor. A typical household lead-acid energy storage battery may cost between 500 yuan and 800 yuan per kilowatt hour (kWh). In contrast, lithium batteries have higher energy density and longer cycle life, but they are also more expensive. The cost of household lithium battery energy storage systems typically ranges from 1000 to 2000 RMB per kilowatt hour. Flow batteries have better charging and discharging performance and longer service life, but their initial investment cost is higher.

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