I rode my bike a week ago and it ran awesome.  I keep my bike always plugged into a "smart" battery charger.  Yesterday, I went to install some rear turn signals and after taking off the seat I noticed that the battery was hot so I unplugged the charger.  I decided to start the bike and after pushing the E-start, it tried to start and then went to the solenoid clicking. That's all it will do now and nothing will light up including the dash, lights, etc.  Fuses are good.  When I checked the battery with the voltmeter it was reading 20v which doesn't make sense.  I need help figuring this out so I don't need to bring it into a shop if possible.  Thanks for any and all help on this!!!