How much energy can a Li Ion battery store?

The energy storage capacity of a lithium-ion (Li-ion) battery typically ranges from 150 to 250 watt-hours per kilogram (Wh/kg), depending on the specific chemistry and design. For practical applications, this can translate to a total capacity of anywhere from a few hundred to several thousand watt-hours, depending on the size of the battery pack. For example, electric vehicle batteries often have capacities around 60 to 100 kilowatt-hours (kWh) to provide adequate range.