Online battery state of health estimation during charging

A battery charging station for determining the state of health of a battery by monitoring charging of a battery over multiple charging instances, the charging station comprising power electronics configured to control delivery of electric energy to the battery and control circuitry connected to the power electronics to cause:

• recognizing the battery via a unique identifier;
• charging the battery;
• monitoring conditions of the battery during charging, said conditions including at least one of a voltage supplied to the battery, a current supplied to the battery and a temperature of the battery;
• storing data related to the current charging instance based at least partially on the monitored conditions;
• retrieving data related to at least one earlier charging instance of the uniquely identified battery;
• and
• making, during charging of the battery, a determination of the uniquely identified battery's state of health based at least partially on a comparison of the data related to the current charging instance and the retrieved data related to at least one earlier charging instance.

A battery charger comprising at least one processing core, at least one memory including computer program code, the at least one memory and the computer program code being configured to, with the at least one processing core, cause the battery charger at least to:

• recognize the battery via a unique identifier;
• charge the battery;
• monitor conditions of the battery during charging, said conditions including at least one of:
• a voltage supplied to the battery, a current supplied to the battery and a temperature of the battery while charging the battery;
• store data related to the current charging instance based at least partially on the monitored conditions;
• retrieve data related to at least one earlier charging instance of the uniquely identified battery;
• and
• determine a state of health of the uniquely identified battery based at least partially on a comparison of data related to the current charging instance and the retrieved data related to at least one earlier charging instance.