On Sun, 09 May 2004 19:30:54 -0700, T Berk <tberk@sbcglobal.net> wrote: > - The 120A regulator is set higher and/OR it has a larger 'pool' of > available energy so it can float at the higher end without strain. All alternator voltage regulators are not set to the same voltage. You may find this interesting reading: http://www.landiss.com/battery.htm --Andrew