Honda CBR125R, Owner'S Manual

Page: 363 / 430

BATTERY/CHARGING SYSTEM
16-3
SERVICE INFORMATION
GENERAL
• Always turn OFF the ignition switch before disconnecting any electrical component.
• Some electrical components may be damaged if terminals or connectors are connected or disconnected while the igni-
tion switch is ON and current is present.
• For extended storage, remove the battery, give it a full charge, and store it in a cool, dry space. For maximum service
life, charge the stored battery every 2 weeks.
• For a battery remaining in a stored motorcycle, disconnect the negative battery cable from the battery terminal.
• The maintenance free battery must be replaced when it reaches the end of its service life.
• The battery can be damaged if overcharged or undercharged, or if left to discharge for a long period. These same con-
ditions contribute to shortening the "life span" of the battery. Even under normal use, the performance of the battery
deteriorates after 2 – 3 years.
• Battery voltage may recover after battery charging, but under heavy load, battery voltage will drop quickly and eventu-
ally die out. For this reason, the charging system is often suspected as the problem. Battery overcharge often results
from problems in the battery itself, which may appear to be an overcharging symptom. If one of the battery cells is
shorted and battery voltage does not increase, the regulator/rectifier supplies excess voltage to the battery. Under these
conditions, the electrolyte level goes down quickly.
• Before troubleshooting the charging system, check for proper use and maintenance of the battery. Check if the battery
is frequently under heavy load, such as having the headlight and tail light ON for long periods of time without riding the
motorcycle.
• The battery will self-discharge when the motorcycle is not in use. For this reason, charge the battery every 2 weeks to
prevent sulfation from occurring.
• When checking the charging system, always follow the steps in the troubleshooting flow chart (page 16-4).
• For alternator removal (page 11-6).
BATTERY CHARGING
• Turn power ON/OFF at the charger, not at the battery terminal.
• For battery charging, do not exceed the charging current and time specified on the battery. Using excessive current or
extending the charging time may damage the battery.
• Quick charging should only be done in an emergency; slow charging is preferred.
BATTERY TESTING
Refer to the instruction of the Operation Manual for the recommended battery tester for details about battery testing. The
recommended battery tester puts a "load" on the battery so the actual battery condition can be measured.
SPECIFICATIONS
• The battery gives off explosive gases; keep sparks, flames and cigarettes away. Provide adequate ventilation when
charging.
• The battery contains sulfuric acid (electrolyte). Contact with skin or eyes may cause severe burns. Wear protective
clothing and a face shield.
– If electrolyte gets on your skin, flush with water.
– If electrolyte gets in your eyes, flush with water for at least 15 minutes and call a physician immediately.
• Electrolyte is poisonous.
– If swallowed, drink large quantities of water or milk and call your local Poison Control Center or a physician
immediately.
Recommended battery tester BM-210 or BATTERY MATE or equivalent
ITEM SPECIFICATIONS
Battery Capacity 12 V - 6 Ah
Current leakage 0.1 mA max.
Voltage
(20
°
C/68
°
F)
Fully charged 13.0 – 13.2 V
Needs charging Below 12.4 V
Charging current Normal 0.6 A/5 – 10 h
Quick 3 A/1 h
Alternator Capacity 0.290 kW/5,000 min
-1
(rpm)
Charging coil resistance (20
°
C/68
°
F) 0.2 – 0.6
Ω