Yamaha R15 2022 Service Manual page 477

A. Open-circuit voltage (V)
B. Charging time (hours)
C. Relationship between the open-circuit voltage
and the charging time at 20 °C (68 °F)
D. These values vary with the temperature, the
condition of the battery plates, and the
electrolyte level.
A. Open-circuit voltage (V)
B. Charging condition of the battery (%)
C. Ambient temperature 20 °C (68 °F)
4. Remove:
• Battery band
• Battery
5. Charge:
• Battery
(refer to the appropriate charging method)
EWA13300
WARNING
Do not quick charge a battery.
ECA13671
• Do not use a high-rate battery charger
since it forces a high-amperage current
into the battery quickly and can cause bat-
tery 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.
ELECTRICAL COMPONENTS
• When charging a battery, be sure to remove
• To reduce the chance of sparks, do not
• Before removing the battery charger lead
• Make sure the battery charger lead clips are
• If the battery becomes hot to the touch at
• As shown in the following illustration, the
8-144
it from the vehicle. (If charging has to be
done with the battery mounted on the vehi-
cle, disconnect the negative battery lead
from the battery terminal.)
plug in the battery charger until the battery
charger leads are connected to the battery.
clips from the battery terminals, be sure to
turn off the battery charger.
in full contact with the battery terminal and
that they are not shorted. A corroded bat-
tery charger lead clip may generate heat in
the contact area and a weak clip spring may
cause sparks.
any time during the charging process, dis-
connect the battery charger and let the bat-
tery cool before reconnecting it. Hot
batteries can explode!
open-circuit voltage of a VRLA (Valve Reg-
ulated Lead Acid) battery stabilizes about
30 minutes after charging has been com-
pleted. Therefore, wait 30 minutes after
charging is completed before measuring
the open-circuit voltage.
A. Open-circuit voltage (V)
B. Time (minutes)
C. Charging
D. Ambient temperature 20 °C (68 °F)
E. Check the open-circuit voltage
ELEC – +