[mrlmd1]

A few questions - What are you charging the battery with? What are you measuring the voltage with? What was the battery voltage when it was load tested? There is no way it would pass the test if it was only at 12.5V.
And how did you check for "current leak"?

Put the battery on a 2 amp charger overnight. Measure the voltage in the morning when you take it off the charger, wait another 1/2 - 1 hr. and measure the voltage again, then measure it the next day and see if it's stable. If it is, put it back on the bike and measure the voltage when you hit the start button - you are doing your own load test, then see what is is at moderate engine speed (say 3000 rpm).

If your battery truly is good, then the most likely cause of your sudden loss of all electric power is either real dirty or corroded battery connections or a loose one that vibrated loose and lost contact.
But, there is another thing that can lead to a dead battery when you are done riding and park the bike -- to accidentally turn the key instead of to OFF, to PARK (all the way over to the left), leaving on the parking lights which you may not notice being on when you walk away from the bike, unless you specifically look for them. This may be your problem. Look at the key switch. look at the manual (download from this site if you don't have one), and don't do that = problem solved.