Yamaha 2004 Rhino 660 YXR660FAS Service Manual page 125

CHECKING AND CHARGING THE BATTERY
Charging method using a constant voltage charger
YES
Charge the battery until the charging
voltage reaches 15 V.
Leave the battery unused for more than 30
minutes before measuring its open-circuit
voltage.
12.8 V → Charging is complete.
12.7 V → Recharging is required.
~
12.0
Under 12.0 V → Replace the battery.
CAUTION:
Constant amperage chargers
are not suitable for charging MF
batteries.
Measure the open-circuit
voltage prior to charging.
Connect a charger and
ammeter to the battery and
start charging.
Is the amperage higher
than the standard charging
amperage written on the
battery?
NOTE:
Set the charging time to a max-
imum of 20 hours.
3 - 48
NOTE:
Leave the battery unused for
more than 30 minutes before
measuring its open-circuit volt-
age.
NO
This type of battery charger cannot
charge an MF battery. A variable
voltage charger is recommended.
Charger
Voltmeter
CHK
ADJ
Ammeter