我做了十年电池，至今也没买电车丨产品MAX

Core Viewpoint - The article emphasizes the importance of product reporting in the automotive industry, particularly for consumers and manufacturers, and introduces a new product observation column that aims to provide valuable insights for car buyers and industry professionals [3][4]. Group 1: Battery Selection and Safety - When selecting electric vehicles, the engineer prioritizes battery safety, particularly favoring lithium iron phosphate (LiFePO4) batteries over ternary batteries due to safety concerns associated with the latter [5][12]. - The engineer is willing to pay a premium for high-quality brands like CATL when choosing ternary batteries, especially for vehicles priced above 200,000 yuan [6][7]. - The engineer recommends avoiding fast charging (4C) for personal use, suggesting that a 2C charging rate is sufficient and better for battery longevity [8]. Group 2: Market Trends and Recommendations - The engineer advises consumers to choose vehicles from manufacturers with high sales volumes, such as those using CATL batteries or BYD, as these brands are likely to have better quality control [13][20]. - There is skepticism towards new entrants in the automotive market, as they may lack the experience and quality assurance of established manufacturers [14][15]. - The article highlights that while some new energy vehicles may appear cheaper with high configurations, they often compromise on quality in unseen areas [15][21]. Group 3: Battery Lifespan and Maintenance - Current lithium iron phosphate batteries can achieve over 3,000 cycles at 2C and 1,500-2,000 cycles at 4C, making them suitable for 5-8 years of use under normal conditions [23]. - Proper battery maintenance includes avoiding high temperatures and high state of charge (SOC) during storage, and keeping the battery charge between 10% and 90% for optimal lifespan [24]. Group 4: Regulatory Standards - The new national standards for batteries are the strictest yet, but they still represent a minimum requirement, and many batteries can meet these standards without guaranteeing absolute safety [25][26]. - The article notes that while some manufacturers may pass rigorous safety tests, these tests do not account for all real-world driving conditions, emphasizing the need for caution in high-speed scenarios [27].