A battery’s charge and discharge rates are controlled by battery C Rates. The battery C Rating is the measurement of current in which a battery is charged and discharged at.The capacity of a battery is generally rated and labelled at the 1C Rate (1C current), this means a fully charged battery with a capacity of 10Ah should be able to provide 10 Amps for one hour. That same 10Ah battery being discharged at a C Rating of 0.5C will provide 5 Amps over two hours, and if discharged at a 2C Rate it will provide 20 Amps for 30 minutes. The C Rating of a battery is important to know as with the :
majority of batteries the available stored energy depends on the speed of the charge and dischargecurrents.
The charge and discharge rate of lithium batteries determines how fast a certain amount of energy can be stored in the battery, or how fast the energy can be released from the battery.However,in many occasions, we need a high C-rate battery. Nowadays, lithium battery is widelsed in various fields because of its excellent advantages. In order to achieve better development oflithium-ion batteries, we need to understand what factors are limiting the battery’s rate performance.