Checking And Charging The Battery - Yamaha YJ125S Service Manual

CHECKING AND CHARGING THE BATTERY

Relationship between the open-circuit voltage
13.0
and the charging time at 20 C
12.5
12.0
11.5
5 6.5
Charging time (hours)
These values vary with the temperature, the condition of
the battery plates, and the electrolyte level.
Charging condition of the battery (%)
10
Ambient
temperature
20 C
3-48
b. Check the charge of the battery, as shown
in the charts and the following example.
Example
c. Open-circuit voltage = 12.0 V
d. Charging time = 6.5 hours
e. Charge of the battery = 20 <-> 30%
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5. Charge:
8 battery
(refer to the appropriate charging method
illustration)
w
Do not quick charge a battery.
cC
8 8 8 8 8 Never remove the MF battery sealing
caps.
8 8 8 8 8 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.
8 8 8 8 8 If it is impossible to regulate the charg-
ing current on the battery charger, be
careful not to overcharge the battery.
8 8 8 8 8 When charging a battery, be sure to re-
move it from the scooter. (If charging has
to be done with the battery mounted on
the scooter, disconnect the negative bat-
tery lead from the battery terminal.)
8 8 8 8 8 To reduce the chance of sparks, do not
plug in the battery charger until the bat-
tery charger leads are connected to the
battery.
8 8 8 8 8 Before removing the battery charger
lead clips from the battery terminals, be
sure to turn off the battery charger.
CHK
ADJ