If battery label says 550 CCA but when tested the CCA is 250, is this bad? does this mean the battery is bad? do I need to change ASAP?

What is CCA mean for car battery

ignoramus9 October 15, 2010, 5:43pm 2

sounds like cranking amps. And yes, if it is only half either you are testing it wrong, or it is only cranking half its rated amps which is not good.