the maximum charge voltage of a lithium battery is 14.8 V. In the event of a regulator problem, the battery cells are gradually but rapidly damaged, one after the other, until there is a risk of the battery exploding.
Whenever possible, connect the motorcycle to a specific maintenance charger whenever you stop.
Do not use a starter booster.
In winter, activate the starter several times to wake up the battery.
The battery is guaranteed for 6 months