Did they mention how the CCA number was achieved? Some of those companies reference a pulse CCA which is done on a 5 second scale as opposed to a 15 second test. The 25 amp hour seems low for the CCA but I am not familiar with the lithium stuff.
Most of the LI batteries like Joel mentioned are rated differently than normal lead acid car batteries. They stop the test when voltage drops to 10 volts on LI batteries as I recall, while SAE tests used on lead acid batteries normally run them all the way down to 7.2 volts.
