Indian Motorcycle 2003 Chief Vintage, Service Manual

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Refer to CHARGING SYSTEM SERVICE for battery
removal, installation and inspection procedures.
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Voltmeter testing provides a general indication of battery
condition and calculated percent of charge. Measure the
voltage of the battery to determine its charged level. If
the Open Circuit Voltage (OCV) reading (battery
disconnected) is below 12.6 volts, charge the battery
and then recheck voltage after the battery has set for
1–2 hours. If the measured voltage reading is 12.8 volts
or above, perform a load test on the battery to
determine battery performance.
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The load test measures battery performance under full
current load and is the best indicator of battery
condition. Load test the battery as follows:
Remove the battery.
Load testing a discharged battery can result in
permanent damage.
Measure the OCV of the battery before load testing.
Charge the battery as necessary and let stand for
one hour before load testing.
Connect battery load tester leads to the terminals of the
battery. Place inductive pickup over negative (black)
lead.
Always turn the battery load tester OFF before
connecting leads to battery terminals. Connecting
leads with tester ON can cause a spark resulting in
a battery explosion and result in serious personal
injury.
Load the battery at 50% of the Cold Cranking Amperage
(CCA) rating, using the load tester. The voltage reading
after 15 seconds of load should be 9.6 volts or above, at
70°F (21°C).
To avoid tester or battery damage, do not leave the
tester load dial ON for more than approximately
20 seconds.
If the battery fails to maintain 9.6 volts for 15 seconds at
70°F (21°C), replace the battery.
Install the battery after testing is complete.
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Never charge a battery without first reading the battery
charger instructions. In addition to the battery
manufacturer’s charging guidelines, follow these general
safety precautions:
• Always wear proper eye, face and hand protection.
• Always charge batteries in a well-ventilated area.
• Make sure the battery charger is OFF before
connecting any leads to avoid dangerous sparks.
• Never charge a damaged or frozen battery.
• Always disconnect the battery for charging
purposes.
• Connect the red positive (+) lead of the charger to
the positive (+) terminal of the battery. Connect the
black negative (–) lead of the charger to the
negative (–) terminal of the battery.
• Make sure the charger leads are in good condition.
• If the battery becomes HOT, reduce the charging
rate or temporarily turn the charger OFF.
• Always turn the charger OFF before disconnecting
the charger leads to avoid dangerous sparks.
Table 1: Voltmeter Testing for Battery
Charge Condition
Open Circuit Voltage State of Charge
13.0 100%
12.8 75%
12.5 50%
12.2 25%
11.8 0%
Table 2: Battery Load Test
Battery CCA (12V, 24A) 50% of CCA
350 175