11-11-2013, 09:32 AM
les,
it should be above 13v. more in the 13.6v range.
it is likely not your batteries. the ddec will be a more accurate reading than your dash gauge.
it is most likely your connections from your alternator to the battery or the voltage regulator.
i have the huge 50dn oil cooled alternator and it has a separate voltage regulator that you can adjust the output voltage on and i have done that.
the other alternators likely have an internal voltage regulator.
i would clean and tighten the cable from the alternator to the battery and and the ground cables.
tom
it should be above 13v. more in the 13.6v range.
it is likely not your batteries. the ddec will be a more accurate reading than your dash gauge.
it is most likely your connections from your alternator to the battery or the voltage regulator.
i have the huge 50dn oil cooled alternator and it has a separate voltage regulator that you can adjust the output voltage on and i have done that.
the other alternators likely have an internal voltage regulator.
i would clean and tighten the cable from the alternator to the battery and and the ground cables.
tom
2014 Haulmark 40' Super C on Freightliner Cascadia ISX15 Easton 13 speed
Former Owner 1990 38' Newell Coach 236 8V92
Former Owner 1999 45'8" Newell Coach 526 Series 60
Former Owner 2002 45'8" Newell Coach 608 Series 60