Warming on draining Litihum battery on the bike!
Was getting ready for a track weekend.
Put the bike on the rear stand and started it, put in gear and used a rag and spray to clean the chain. (I know... i'm lazy)
Wanted to leave it for a few hours before putting on some wax.
Turned off the bike using the switch, and forgot to turn off the ignition.
3-4 hours later, the battery was dead. Literally dead. Volt meter showed zero as the battery went into failsafe mode and turn off.
My battery tender Lithium Ion charger didnt work (left overnight)
Had to take it to a specialist who 'bumped' it to life and then he charged it overnight for me.
Don't forget to turn off the key/Ignition!