The beginning of life cycle, Begin of Life (BoL), marks the start time of a product and, in the case of a battery, its delivery time.
For general products, Begin of Life includes the design, development, testing and preparatory measures for marketing the product. The end of product life is characterized by End of Life( EoL). The entire period from Begin of Life (BoL) to End of Life (EoL) inclusive is the life of the product. In the case of batteries and rechargeable batteries, the service life, which depends on many factors, stands for the period during which batteries can be used as energy storage devices while maintaining their defined characteristic values.