Yamaha TT-R125EY Service Manual page 91

BATTERY INSPECTION AND CHARGING
Charging method using a constant voltage charger
YES
Charge the battery until the
charging voltage reaches 15 V.
TIP
Set the charging time to a
maximum of 20 hours.
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.
NOTICE
Constant amperage chargers are
not suitable for charging MF
batteries.
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?
Voltimeter
3-39
INSP
ADJ
TIP
Leave the battery unused for more
than 30 minutes before measuring
its open-circuit voltage.
NO
This type of battery charger
cannot charge an MF battery. A
variable voltage - charger is
recommended.
Charger
Ammeter