In the right corner it's....Sir Gawain! He is nephew to King Arthur, and an honorable knight of Arthur's Round Table. He is very popular with the ladies, and quite charming. He is loyal to his king and queen and keeps his promises.
To charge the battery, the alternator voltage output has to exceed a minimum charging voltage. This minimum charging voltage is 13.8 volts dc across the battery terminals, or at the output of the alternator. A single lead-acid cell starts to charge at anything over 2.25 volts.ince a 12 volt battery has six cells, any 12 volt lead-acid battery needs at least 13.8 volts to start to charge. This voltage will be enough to fully charge or maintain the battery on a trickle charge, but charging time will be very long at 13.8 volts.
4) check the battery Voltage. *** The Battery voltage Should read between about 13.8 to 14.2 volts. (Possibly up to 14.5 Volts.) 5) Increase motor speed to about 1500 RPM. The Alternator should now produce a battery voltage between 14.2 and 14.6 Volts.*** If it is Lower than 14.2 volts, the Alternator probably has one or more Bad Diodes.6) Now, Maintain the 1500 RPM and Turn off the Headlights.Possibly up to 14.5 Volts.) 5) Increase motor speed to about 1500 RPM. The Alternator should now produce a battery voltage between 14.2 and 14.6 Volts. *** If it is Lower than 14.2 volts, the Alternator probably has one or more Bad Diodes. 6) Now, Maintain the 1500 RPM and Turn off the Headlights.