印度采购需求：电池管理系统，BMS电池，BMS模块，锂BMS，BMS锂电池，适用于Lifepo4的BMS

I am reaching out to inquire about two specific battery management systems that I'm looking to source for an upcoming project. I need a compact model suitable for a 4-cell configuration with a 12V output and a current rating of around 40A. Additionally, I'm also interested in a more robust option designed for an 8-cell setup, again with a 12V output, but this time with a current capacity of approximately 60A. Could you please provide me with your pricing details, lead times, and any relevant specifications or certifications for these units? I'm particularly interested in understanding the compatibility with various battery types, as well as any features that enhance safety and efficiency. If you have batch purchase options or discounts, that information would be appreciated as well. Looking forward to your prompt response!