Yamaha 2012 Grizzly 300 Service Manual page 112

CHECKING AND CHARGING THE BATTERY
Charging Ambient temperature
20°C (68°F)
18
17
16
15
14
13
12
11
10
20 40
0 10 30
Check the open-circuit
voltage.
14
13
12
11
10
100 75 50
Charging condition of the battery (%)
50 60
Time (minutes)
Ambient
temperature
20°C (68°F)
30 25 20 0
3-54
Example
c. Open-circuit voltage = 12.0 V
d. Charging time = 6.5 hours
e. Charge of the battery = 20 ~ 30%
5. Charge:
• battery
(refer to the appropriate charging method
illustration)
WARNING
Do not quick charge a battery.
NOTICE
•NeverremovetheVRLA (Valve Regulated
Lead Acid) battery sealing caps.
• 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 dam-
age.
• If it is impossible to regulate the charging
current on the battery charger, be careful
not to overcharge the battery.
• When charging a battery, be sure to
remove it from the machine. (If charging
has to be done with the battery mounted
on the machine, disconnect the negative
battery lead from the battery terminal.)
• To reduce the chance of sparks, do not
plug in the battery charger until the bat-
tery charger leads are connected to the
battery.
• Before removing the battery charger lead
clips from the battery terminals, be sure to
turn off the battery charger.
• Make sure the battery charger lead clips
are in full contact with the battery terminal
and that they are not shorted. A corroded
battery charger lead clip may generate
heat in the contact area and a weak clip
spring may cause sparks.
• If the battery becomes hot to the touch at
any time during the charging process, dis-
connect the battery charger and let the
battery cool before reconnecting it. Hot
batteries can explode!
CHK
ADJ