Yamaha XF50W Service Manual page 110

CHECKING AND CHARGING THE BATTERY
Charging method using a constant voltage charger
YES
Charge the battery until the charging
voltage reaches 15 V.
i
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 re-
quired.
Under 12.0 V ~ Replace the battery.
cC
Constant amperage chargers are not
suitable for charging MF batteries.
Measure the open-circuit
voltage prior to charging.
Connect a charger and am-
meter to the battery and start
charging.
Is the amperage higher than
the standard charging am-
perage written on the bat-
tery?
NOTE:
Set the charging time to a maximum
of 20 hours.
This type of battery charger cannot
charge
variablevoltage charger is recom-
mended.
Voltmeter
N -
V
3-55
NOTE:
Leave the battery unused for more
than 30 minutes before measuring
its opencircuit voltage.
NO
i
an MF battery.
Charger
Ammeter Ammeter
1 1
M M M
1
t r
I
A
A A A