C is the actual capacity, U is the discharge voltage, I is the discharge current, R is the discharge resistance, and T is the time from discharge to termination voltage.

　　Nameplate capacity: Nameplate capacity refers to the minimum amount of electricity that should be discharged under certain discharge conditions according to the standards issued by the state or relevant departments when designing and manufacturing batteries. As specified for electric vehicles, the capacity released at a C/3 discharge rate.

　　Rated reserve capacity: the capacity of automotive batteries specified in the standards of the International Electrotechnical Society (IEC) can be expressed in terms of Nameplate capacity and reserve capacity. China adopts Nameplate capacity. It refers to the discharge time in minutes at a current of 25A, regardless of the size of the battery, until the termination voltage of 1.75V. Specify different discharge times for batteries with different specifications.

　　The energy of a battery refers to the electrical energy it can provide under certain discharge conditions, usually expressed in Wh.

　　The power of a battery refers to the amount of energy given by the battery per unit time under certain discharge conditions, in watts or kilowatts. The power that a unit weight battery can provide is called specific power, in units of W/kg or KW/kg

　　State of Charge (SOC): It is an important parameter that describes the state of charge of a battery. Usually, the state where the battery is charged to a certain temperature and cannot absorb any more energy is understood as a state of charge (SOC) of 100%, while the state where the battery can no longer release energy is understood as a state of charge (SOC) of 0%

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