Yet another battery question

[Punjistick]

So I was working on my EX500 trying to get it ready for the trackday on the 29th and I noticed that the battery tender was set to 6 volts and not 12. I don't know how the switch got moved over but it was definitely set to 6 volts. So I went to start the bike and I heard a horrible buzzing sound and then nothing. No power, no lights, nothing. Is the battery junk? Did I blow a fuse?

It looks like I'll be taking the 750 to the track day on the 29th unless I can figure this out tomorrow.

[Punjistick]

Looks like the battery is toast. I swapped in the battery from my brother's EX and it started to turn over.

[Honclfibr]

It might not be dead, just not charged. Charge it at 12 volts and see.