DIN is a standard for automobile electric terminal numbers, standardizing automobile with a number code. A different standard, EN 50005 recommends terminal numbering for general application relays (e.g. 11/12/14/A1/A2 for a SPDT relay) that may nevertheless be applied to automobiles.
SAE Test Carried out
Again as with SAE the test is carried out at -18°C. The fully charged battery is discharged to 6V with the rated test current. The voltage must be at least 9.0V after 30 seconds and the time to achieve 6V must be at least 150 seconds. Although subject to battery design an approximation of DIN to SAE CCA relationship is:- DIN = (SAE – 40) x 0.66 Since the introduction of modern fuel injected vehicles and the need for fast starting, the DIN standard has lost favor amongst automotive vehicle manufacturers. However, it does give a clear relationship with the amount of materials used within the battery, but not startability.