Honda CBR650F Service Manual page 363

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BATTERY/CHARGING SYSTEM
SERVICE INFORMATION
BATTERY/CHARGING SYSTEM
GENERAL
• 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.
• 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 ignition 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 conditions
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 eventually 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 20-3).
• For alternator service (page 12-2).
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.
RECOMMENDED BATTERY TESTER: BM-210 or BATTERY MATE or equivalent
20-2