Yamaha YFM7FGPW Service Manual page 150

CHECKING AND CHARGING THE BATTERY
Relationship between the open-circuit volt-
age and the charging time at 20 °C (68 °F)
These values vary with the temperature and the
condition of the battery plates.
Charging
Ambient temperature
20 °C (68 °F)
Check the open-circuit
voltage.
Charging condition of the battery (%)
b. Check the charge of the battery, as shown
Example
c. Open-circuit voltage = 12.0 V
d. Charging time = 6.5 hours
e. Charge of the battery = 20 ~ 30%
L LLL
Charging time (hours)
5. Charge:
• battery
_
Do not quick charge a battery.
Time (minutes)
CAUTION:
_
• Never remove the MF battery sealing
caps.
Ambient
• Do not use a high-rate battery charger
temperature
20 °C (68 °F)
since it forces a high-amperage current
into the battery quickly and can cause
battery overheating and battery plate
damage.
• If it is impossible to regulate the charging
current on the battery charger, be careful
not to overcharge the battery.
• When charging a battery, be sure to
remove it from the vehicle. (If charging
has to be done with the battery mounted
on the vehicle, disconnect the negative
battery lead from the battery terminal.)
• To reduce the chance of sparks, do not
plug in the battery charger until the bat-
tery 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 the battery charger lead clips
are in full contact with the battery termi-
nal and that they are not shorted. A cor-
roded battery charger lead clip may
generate heat in the contact area and a
weak clip spring may cause sparks.
3 - 69
in the charts and the following example.
L LLL L L LLL L L LLL L
(refer to the appropriate charging method
illustration)
WARNING
CHK
ADJ
L LLL L L LLL L LLL