TROUBLESHOOTING AND ELECTRICAL SYSTEM
Test Procedures
Page 11-14
2005 Precedent Gasoline Golf Car Maintenance and Service Manual
11
Interpreting the Results of the Hydrometer Test
The approximate state of charge can be determined by referring to the following table:
If the difference between the cells is 0.020 or more, the low cell should be suspected. It may require a catch-
up charge or it may be a weak cell. When the variations between cells reach 0.050 or more, the battery should
be replaced.
Voltage Test
1. Take a voltage reading with a multimeter set to 20 VDC by placing the red (+) probe on the positive (+)
battery post and the black (–) probe on the negative (–) battery post. If it shows less than 12.4 volts, or
if the lowest specific gravity reading from the Hydrometer Test is less than 1.225, recharge the battery.
If battery voltage is greater than 12.4 volts and specific gravity is greater than 1.225, the problem is not
with the battery. If the battery does not reach 12.4 volts, or if the specific gravity of a cell is still less than
1.225 after charging, replace the battery.
See following NOTE.
NOTE:
A fully charged battery that is in good condition should have a specific gravity of at least 1.225 in
all cells, and the difference in the specific gravity of any two cells should be less than 50 points.
Open circuit voltage should be at least 12.4 volts.
Load Test
1. Connect a 160-ampere load tester to the battery posts.
2. Turn the switch on the load tester to the ON position.
3. Read the battery voltage after the load tester has been turned on for 15 seconds. Compare the battery’s
voltage reading with the following table. Make sure you have the correct ambient temperature.
4. If the battery is found to be good, or if the electrical problem continues after the battery has been replaced
with a good one, test the electrical circuits.
SPECIFIC
GRAVITY(TEMPERATURE
CORRECTED)
APPROXIMATE
STATE OF CHARGE
1.250-1.280
100%
1.220-1.240
75%
1.190-1.210
50%
1.160-1.180
25%
IF TEMPERATURE IS
MINIMUM CRANKING
VOLTAGE
70 °F (20 °C and above)
9.6 V
60 °F (16 °C)
9.5 V
50 °F (10 °C)
9.4 V
40 °F (4 °C)
9.3 V
30 °F (-1 °C)
9.1 V
20 °F (-7 °C)
8.9 V
10 °F (-12 °C)
8.7 V
0 °F (-18 °C)
8.5 V
Summary of Contents for 2005 precendent
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