Yamaha 2004 YP400, Service Manual, Page: 130 / 417

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CHK
ADJ
CHECKING AND CHARGING THE BATTERY
Charging method using a variable-current (voltage) charger
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?
NO YES
Charger
Ammeter
Adjust the voltage to obtain the
standard charging amperage.
Set the timer to the charging
time determined by the open-
circuit voltage.
Refer to “CHECKING AND
CHARGING THE BATTERY”.
Adjust the charging voltage to
20 ~ 25 V.
Monitor the amperage for 3 ~ 5
minutes. Is the standard charg-
ing amperage exceeded?
NO
YES
If the amperage does not
exceed the standard charging
amperage after 5 minutes,
replace the battery.
If the required charging time exceeds 5 hours, it is advisable to check the
charging amperage after 5 hours. If there is any change in the amperage,
readjust the voltage to obtain the standard charging amperage.
Leave the battery unused for more than 30 minutes before measuring its
open-circuit voltage.
12.8 V
→
Charging is complete.
12.0 ~ 12.7 V
→
Recharging is required.
Under 12.0 V
→
Replace the battery.
Leave the battery unused for
more than 30 minutes before
measuring its open-circuit voltage.
Set the charging voltage to
16 ~ 17 V. (If the charging
voltage is lower, charging will
be insufficient, if it is higher,
the battery will be over-
charged.)
NOTE:
NOTE: