Checking And Charging The Battery - Yamaha YZF-R125 Service Manual

YamahaR125.COM
EAS28010

CHECKING AND CHARGING THE BATTERY

EWA13290
WARNING
Batteries generate explosive hydrogen gas
and contain electrolyte which is made of poi-
sonous and highly caustic sulfuric acid.
Therefore, always follow these preventive
measures:
• Wear protective eye gear when handling or
working near batteries.
• Charge batteries in a well-ventilated area.
• Keep batteries away from fire, sparks or
open flames (e.g., welding equipment,
lighted cigarettes).
• DO NOT SMOKE when charging or han-
dling batteries.
• KEEP BATTERIES AND ELECTROLYTE
OUT OF REACH OF CHILDREN.
• Avoid bodily contact with electrolyte as it
can cause severe burns or permanent eye
injury.
FIRST AID IN CASE OF BODILY CONTACT:
EXTERNAL
• Skin — Wash with water.
• Eyes — Flush with water for 15 minutes and
get immediate medical attention.
INTERNAL
• Drink large quantities of water or milk fol-
lowed with milk of magnesia, beaten egg or
vegetable oil. Get immediate medical atten-
tion.
1. Remove:
• Rider seat
Refer to "GENERAL CHASSIS" on page 4-1.
2. Disconnect:
• Battery leads
(from the battery terminals)
ECA5D71041
CAUTION:
First, disconnect the negative battery lead
"1", then the positive battery lead "2".
1
ELECTRICAL COMPONENTS
3. Remove:
• Battery
4. Check:
• Electrolyte level
The electrolyte level should be between the
minimum level mark "a" and the maximum
level mark "b".
Below the minimum level mark → Add dis-
tilled water to the proper level.
ECA13610
CAUTION:
Add only distilled water. Tap water contains
minerals which are harmful to the battery.
b
a
5. Check:
• Specific gravity
Less than 1.280 → Recharge the battery.
6. Charge:
• Battery
Battery charging amperage and time
5.5 amps/10 hrs
EWA13300
WARNING
Do not quick charge a battery.
ECA13620
CAUTION:
• Loosen the battery sealing caps.
• Make sure the battery breather hose and
battery vent are free of obstructions.
• To ensure maximum performance, always
charge a new battery before using it.
2
• Do not use a high-rate battery charger.
They force a high-amperage current into
the battery quickly and can cause battery
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.
8-64
Specific gravity
1.280 at 20 °C (68 °F)