Brand new lead acid car battery reads only 12.33v. Is it faulty?
A lead-acid battery that has been partially discharged for a period of 6 months can take as much as 30 hours to fully charge! So what I would do is either of these two: Drive the car at least 1000 km (not necessarily in one trip, but the trips need to be long enough, lots of 5-km trips won''t recharge it fully) and measure the resting open