10月15日电池级碳酸锂（早盘）价格较前一日下跌100元

Group 1 - The core point of the article is that the price of battery-grade lithium carbonate has decreased by 100 yuan, with an average price reported at 73,150 yuan per ton as of October 15 [1] Group 2 - The data was released by Shanghai Steel Union, indicating a notable change in the lithium carbonate market [1] - The price drop reflects ongoing fluctuations in the battery materials sector, which is critical for electric vehicle production [1] - The average price of 73,150 yuan per ton serves as a benchmark for industry stakeholders [1]