M stands for the BMW Motorsport division, like the previously mentioned M3. The letter X represents a crossover/SUV body style. The X Series vehicles are also numbered from one to seven, which is related to their size, such asthe midsize X6, a sports activity coupe. The Z denotes roadst...
As lifetime of a battery is typically smaller than that of the application it is used in and performance decreases significantly with ageing, lifetime and performance predictions are of great importance for almost all battery-powered applications. To achieve a good and reliable prediction, ...