Hybrid wind-solar energy storage systems complement power generation defects, and 2V100Ah lead-acid batteries are cost-effective energy storage devices for such systems. They store redundant photovoltaic and wind power to realize staggered utilization of clean energy and improve overall energy efficiency, solving energy waste caused by intermittent and random wind-solar power generation. Adopting oxygen cycle composite technology, the batteries are leak-proof and long-lasting, adapting to alternating charge-discharge working modes. With higher cost performance and stronger adaptability than new energy storage batteries, they can be flexibly combined into energy storage modules, ideal for small and medium-sized wind-solar complementary power stations and household hybrid energy storage systems.