Industry jargon

Battery degradation

Battery degradation is the gradual loss of usable energy or power capability as a battery ages through time and use. In an EV, degradation can reduce driving range and alter the power the battery can deliver or accept. Battery ageing comes from both calendar ageing and cycling. Temperature, time spent at high or low state of charge, charge and discharge rates, cell chemistry and usage history all affect the rate of change. Rapid charging is one influence rather than a universal single cause. Its effect depends on the cell design and the charging conditions, including temperature and the C-rate applied.