The average lifespan or durability of box mod vapes can depend on various factors, including build quality, usage patterns, maintenance, and care. Well-built box mods with quality materials can last for several years with proper usage and maintenance. However, it's important to note that the lifespan can be influenced by factors such as battery life, wear and tear of buttons and connectors, and potential firmware/software updates. Regular maintenance, such as cleaning and proper handling, can help extend the lifespan of box mod vapes.