Batteries are used in many applications in Embedded systems. Some of the important specifications include Battery Chemistry, Battery Size, Battery Voltage, mAH rating. While these specifications help us to select a battery, there are two other ratings C-rate and E-rate which indicate the charging and discharge specification of the battery.
C-rate: C-rate is derived from coulomb's law. C-rate is a measure of the rate at which battery discharges relative to the capacity of the battery. For example, if a battery has capacity of 100mAH and if the C-rate is mentioned as 1C, then the battery shall be discharged in an hour. Using C-rate we can determine the discharge capacity and safe discharge time of the battery.
The continuous discharge rate can be calculated using the below formula:
Ah*C-rate = continuous discharge Amperes of Battery
E-rate: E-rate talks about the discharge rate of battery power. 1E rate of a battery means it takes 1 hour for the battery to get discharged
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