7-44 2002 Buell P3: Electrical
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Table 7-1. Voltmeter Test
DISCONNECTION AND REMOVAL
1. Remove seat. See 2.28 SEAT.
11WARNING1WARNING
To protect against shock and accidental start-up of vehi-
cle, disconnect the negative battery cable before proced-
ing. Inadequate safety precautions could result in death
or serious injury.
11WARNING1WARNING
Always disconnect the negative cable first. If the positive
cable should contact ground with the negative cable
installed, the resulting sparks may cause a battery explo-
sion which could result in death or serious injury.
2. Unthread bolt and remove battery negative cable (black)
from battery negative (-) terminal.
3. Unthread bolt and remove battery positive cable (red)
from battery positive (+) terminal.
4. Remove battery from motorcycle.
CLEANING AND INSPECTION
1. Battery top must be clean and dry. Dirt and electrolyte on
top of the battery can cause battery to self-discharge.
Clean battery top with a solution of baking soda (sodium
bicarbonate) and water (5 teaspoons baking soda per
quart or liter of water). When the solution stops bubbling,
rinse off the battery with clean water.
2. Clean cable connectors and battery terminals using a
wire brush or sandpaper. Remove any oxidation.
3. Inspect the battery screws, clamps and cables for break-
age, loose connections and corrosion. Clean clamps.
4. Check the battery posts for melting or damage caused
by overtightening.
5. Inspect the battery for discoloration, raised top or a
warped or distorted case, which might indicate that the
battery has been frozen, overheated or overcharged.
6. Inspect the battery case for cracks or leaks.
BATTERY CHARGING
Safety Precautions
Never charge a battery without first reviewing the instructions
for the charger being used. In addition to the manufacturer’s
instructions, follow these general safety precautions:
● Always wear proper eye, face and hand protection.
● Always charge batteries in a well-ventilated area.
● Turn the charger “OFF” before connecting the leads
to the battery to avoid dangerous sparks.
● Never try to charge a visibly damaged or frozen bat-
tery.
● Connect the charger leads to the battery; red posi-
tive (+) lead to the positive (+) terminal and black
negative (–) lead to the negative (–) terminal. If the
battery is still in the vehicle, connect the negative
lead to the chassis ground. Be sure that the ignition
and all electrical accessories are turned off.
● Make sure that the charger leads to the battery are
not broken, frayed or loose.
● If the battery becomes hot, or if violent gassing or
spewing of electrolyte occurs, reduce the charging
rate or turn off the charger temporarily.
● Always turn the charger “OFF” before removing
charger leads from the battery to avoid dangerous
sparks.
Charging Battery
Charge the battery if any of the following conditions exist:
● Vehicle lights appear dim.
● Electric starter sounds weak.
● Battery has not been used for an extended period of
time.
11WARNING1WARNING
Charge the battery in a well ventilated area. Explosive
hydrogen gas escapes from the battery during charging.
Keep open flames, electrical sparks and smoking materi-
als away from the battery at all times. Inadequate safety
precautions could result in death or serious injury.
CAUTION
If the battery releases an excessive amount of gas during
charging, decrease the charging rate. If the battery gets
hotter than 110˚F. (43˚C) during charging, discontinue
charging and allow the battery to cool. Overheating may
result in plate distortion, internal shorting, dry out or
other damage.
1. Perform a voltmeter test to determine the state of
charge. See BATTERY TESTING, VOLTMETER TEST.
11WARNING1WARNING
Always connect the positive battery cable first. If the
positive cable should contact ground with the negative
cable installed, the resulting sparks may cause a battery
explosion which could result in death or serious injury.
CAUTION
Always remove the battery from the motorcycle before
charging. Accidental electrolyte leakage will damage
motorcycle parts.
2. Install the battery on the motorcycle. See BATTERY,
INSTALLATION AND CONNECTION.
BATTERY CHARGE CONDITIONS
Voltage (OCV) State of Charge
12.8 100%
12.6 75%
12.3 50%
12.0 25%
11.8 0%
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