It is not that complicated, just takes a little time.
The battery is under the drivers seat.
Flip the middle section of the seat forward (the part that lets you have access to the fuel tank). There is one bolt on each side of the seat that holds it in place. Remove those, and then remove the seat.
If you would like to charge the battery while it is on the bike then you now have access to the plus and minus terminals.
If you want to remove the battery a bit more wrenching is involved. You will need to remove the rear coil bracket to give complete access to the battery. Once that is off just remove the battery cables undo the strap and pull the battery out.
Now would be a good time to consider a Gel-type battery. I think that the subject is one of the sticky topics. I believe the model I have is Odyssey PC680.
TO re-install simply reverse the process.
GOOD LUCK! :thumbs up: