Yamaha XT660R, Service Manual

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CHK
ADJ
5. Charge:
• battery
(refer to the appropriate charging method
illustration)
WARNING
_
Do not quick charge a battery.
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 motorcycle. (If charg-
ing has to be done with the battery
mounted on the motorcycle, 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.
• 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 it. Hot
batteries can explode!
• As shown in the illustration, the open-cir-
cuit voltage of an MF battery stabilizes
about 30 minutes after charging has been
completed. Therefore, wait 30 minutes
after charging is completed before mea-
suring the open-circuit voltage.
Ambient temperature
Check the open-circuit
voltage.
Time (minutes)
Charging
O
p
en-circuit vol
tage
(V
)
O
pen-
cir
c
u
it volt
age (V
)
Ambient
temperature
Charging condition of the battery (%)
CHECKING AND CHARGING THE BATTERY