Originally Posted by
lunaticfringe
[COLOR="#800000"]I have a new Antigravity ATX12HD battery installed
that's your problem right there. for most BuellXB/XR1200 applications that style battery flat doesn't work. replace with new Deka/Big Crank ETX-14 and your problems will be resolved. access the ecm as you'll have historical and active fault codes 16...36...46. clear them.
I'm seeing 13-13.4V at idle and high 12's and low 13's at cruise (4000-4500 RPM). Lower than I'd like, but still charging.
at 3000rpm steady state cruise i like to see 13.9-14.7 DC volts....depending on amount of headlights in operation, heated gear that's active, etc etc
replace that goofy battery with what i recommend then check voltages again and see what you have. since the 2008-10 charging systems are pretty damn bomb-proof i'll bet your numbers come into spec after battery replacement. just a hunch.