Group 1 - The core project involves the procurement of a complete set of power batteries for 118 new energy buses by Chaohu Public Transport Group, with a total budget and maximum limit of 29.24 million yuan [1][2]. - The procurement includes battery packs, BMS battery management systems, high-voltage boxes, and cooling systems, with a fixed unit price of 247,800 yuan per bus [2]. - The project requires a warranty service of no less than 8 years or 400,000 kilometers, including free maintenance and technical support during the warranty period [2]. Group 2 - The battery type specified for the project is lithium iron phosphate, which is the mainstream application type for buses, with a system voltage compatible with existing vehicles (approximately 540V-600V) [2]. - The technical requirements include an energy density of at least 140 Wh/kg, a cycle life of at least 3,000 times (with 80% capacity retention), and a protection level of IP67 [2]. - Bidders must have independent civil liability, good commercial reputation, and relevant qualifications, including ISO9001 and ISO14001 certifications, and must be battery manufacturers, not agents [2]. Group 3 - The contract performance period is set to complete the supply, installation, and acceptance of the 118 vehicle-mounted power batteries within 30 working days from the contract signing [3]. - The procurement agency for this project is Anhui Tianshun Engineering Cost Consulting Co., Ltd. [3].