From link provided:
Charging - Your charging systems are made for Lead Acid Batteries. Lithium batteries have very low internal resistance. This means your charging systems are capable of producing current higher than they were intended and the faster charging rates for lithium will cause the system to work harder and hotter.
A battery expert I am not but I wonder if a lithium might overwork the motorcycle's charging system ? Have been told it could, or maybe might.
Just checked the service record I keep on my bike. The Yuasa YT14B-BS battery is 5 years old and still going... Don't think I'll fix what ain't broke.
What did you do with your bike today?
Put the battery on charge for a while. I'm old school, don't use a trickle charger... Seems to work okay.
S F