1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 133Get this manual
BATTERY INSPECTION CIJ
Relationship between open-circuit voltage and charging time at 20"C (SS"F)
C: 11.5 CIJ
Check the condition of the battery using the following chartsExample: .Open-circuit voltage12.0V Charging time6.5 hours .Charge condition of the battery 2030 .Charging method for MF batteries
Charging time (Hours)
This varies depending on the temperaturethe state of charge in battery plates and the electro lyle level
If it is impossible to set the standard charging current, be careful not to overcharge When charging the battery, be sure to remove it from the motorcycle(If charging has to be done with the battery mounted on the motorcycle, be sure to disconnect the wire at the negative terminal Never remove the sealing caps of an MF battery Make sure that the charging clips are in full contact with the terminal and that they are not shorted together(A corroded clip on the charger may cause the battery to generate heat in the contact areaA weak clip spring may cause sparks Before removing the clips from the battery terminals, be sure to turn off the charger's power switch The open-circuit voltage variation for the MF battery, after charging, is shown belowAs shown in the figure, the opencircuit voltage stabilizes about 30 minutes after charging has been completedTherefore, wait 30 minutes after charging is completed before measuring the opencircuit voltage