1. The service life of graphene batteries is usually longer than traditional lithium batteries, but the specific service life is affected by various factors, such as the number of charge and discharge cycles, usage environment, battery maintenance status, etc.
Under ideal usage conditions, the theoretical lifespan of graphene batteries can reach thousands of charge and discharge cycles, equivalent to an adult. If a complete charge and discharge is performed once a day, it can theoretically be used for several years. However, it is difficult to achieve such high charging and discharging efficiency in practical use, so the actual service life will be relatively short.
3. Overall, under normal use and maintenance, graphene batteries may need to be replaced after 2 to 3 years of use, but the specific situation still needs to be judged based on the actual performance and usage environment of the battery.