seat removal for battery charge

[Monya53]

new to this site and don't know how to search help.  have a 2018 DR200SE and the battery is dead.  how do I charge it?  where IS the battery.  Mancuso powersports said they didn't know cause they work on so many, they'd have to SEE the bike.  The bike is DEAD and I can't drive it there.  Can anyone help me?  yes, I'm a girl but I take direction very well.