The discussion clarifies that in the context of battery ratings, 'C' does not refer to Coulombs but rather to the capacity of the battery. Specifically, '1C' is equivalent to the amp-hour rating, indicating the rate at which a battery discharges. For example, a rating of '4C' translates to a discharge rate of 400 amps for a quarter of an hour. Understanding this distinction is crucial for interpreting battery specifications accurately.
PREREQUISITESElectrical engineers, battery manufacturers, and anyone involved in battery technology and performance analysis will benefit from this discussion.
robinfisichel said:http://evcomponents.com/cscart/index.php?dispatch=products.view&product_id=29862
for example
I thought Coulombs SI units was A.s so for 1 second 4C = 4A, am i wrong?
mheslep said:No the 'C' in the battery rating refers to battery capacity. '1C' is synonymous with the 'amp-hour' rating of the battery, and is the the rate at which the battery totally discharges in something a little less than one hour. For the OP's example, 4C=400A means the battery would supply 400A for 1/4 hour, but one needs to see the battery discharge curve for tje exact meaning as the curves are not linear.
http://www.batteryuniversity.com/partone-16a.htm