2006-2008 Yamaha RS, Vector, Rage Factory Service Manual, Page 65Get this manual
BATTERY INSPECTION INSP ADJ 12Charge: Battery (refer to the appropriate charging method illustration) WARNING Do not quick
the battery charger until the battery charger leads are connected to the battery Before removing the battery charger lead
clips from the battery terminals, be sure to turn off the battery charger Make sure that the battery charger lead clips are
in full contact with the battery terminal and that they are not shortedA corroded battery charger lead clip may generate
heat in the contact area and weak clip spring may cause sparks If the battery becomes hot to the touch at any time during
the charging process, disconnect the battery charger and let the battery cool before reconnecting itHot batteries can explode!
As shown in the following illustration, the open-circuit voltage of MF battery stabilizes about 30 minutes after charging