Yamaha YP250R 2005 Service Manual page 109

CHECKING AND CHARGING THE BATTERY
Relationship between the open-circuit volt-
age and the charging time at 20 °C.
These values vary with the temperature, the condi-
tion of the battery plates, and the electrolyte level.
Charging
Charging condition of the battery (%)
Charging time (hours)
Ambient temperature 20 °C
Time (minutes)
Check the open-circuit
voltage.
Ambient temperature 20 °C
b. Check the charge of the battery, as shown
in the charts and the following example.
Example
c. Open-circuit voltage = 12.0 V
d. Charging time = 6.5 hours
e. Charge of the battery = 20 ~ 30%
L LLL L LLL L L LLL
6. Charge:
• battery
(Refer to the appropriate charging method
illustration.)
WARNING
Do not quick charge a battery.
CAUTION:
CAUTION:
• Never remove the MF battery sealing
caps.
• Do not use a high-rate battery charger
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
• 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.
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CHK
ADJ
L L LLL L L LLL L
off the battery
L LLL L LLL
charger.