[David E. Clark]

11.56 volts is almost completely discharged! A full charge is 2.12 volts per cell or 12.7 volts for six fully charged cells. Put your battery on a good charger overnight. If you don't get up to at least 12.4 volts, or 80% of a full charge, with a load test, get a new battery. Don't forget to remove the surface charge by turning on the headlights for 30 seconds before you test. If you don't remove the surface charge you won't get reliable results.