Originally Posted by pizzaguy

We have two major ratings in the USA:

1) acc and cca are the same. Both tell us the number of amps the battery can deliver to the starter when cold.




This will be hard to translate.

2) RC (Reserve capacity) The number of minutes the battery can deliver 25 amps at 80 degree C. My battery is rated at 90 minutes.

Your amps rating is the same as RC but stated in a different way. Your rating tells us how many amps the battery can deliver for 60 minutes.



I hope this helps.

acc or cca is the most important rating.