hook up a mini digital voltmeter tapped to the battery. it will give you piece of mind and let you know if there's a charging problem. Not sure of the sealed units but a wet battery on a 2-phase 900SS should read as follows:
ignition off: 12.6V (fully charged)
idle to 1500 RPM: about between 12.6-13.4V
above 5000 RPM about 13.6-14.2V (above that and there's overcharging)
These number may be slightly different on a dry type battery.
for a 3-phase, it maxes out at about 13.6V at 5000 RPM.
HTH