State of health Charging (batteries) 9 Battery management systems 7 Lithium-ion batteries 7 Health 6 States of charges 5 Ions 4 Data driven 3 Digital storage 3 Forecasting 3 Kalman filters 3 Long short-term memory 3 Real- time 3 Unscented Kalman Filter 3 lithium-ion battery 3 state of health 3 Cell-based 2 Degradation resistance 2 Fuel cell system 2 Long life 2 Machine learning 2 NASA 2 Performance degradation 2 Solid Oxide Fuel Cell 2 Solid oxide fuel cells (SOFC) 2 Solid-oxide fuel cell 2 State of health estimation 2 Storage systems 2 degradation resistance 2 state of charge 2