Abstract: Prognostic and health management (PHM) verify the working safely and reliably of lithium batteries, PHM system determines the State of Health (SOH) and the Remaining Useful Life (RUL). To avoid severe negative consequences of the system, this paper presents the preliminary development of genetic algorithm, using an extreme learning machine (ELM) method to predict the State of Health (SOH) of the lithium-ion battery. The low prediction accuracy of the State of Health (SOH) of lithium battery, the extreme learning machine (ELM) algorithm improved by genetic algorithm can improve the prediction accuracy of SOH of lithium battery.