Club Car 1998 DS, Maintenance And Service Manual Supplement

Page: 66 / 132

BATTERIES Battery Testing
Page 13-10 1998/1999 PowerDrive Plus Maintenance and Service Supplement
13
7. Repeat steps 2 through 6 on all cells.
Hydrometer Calibration
Most hydrometers are calibrated to read correctly at 80°F. The readings obtained as described above must be cor-
rected for temperature. For each 10°F above 80°F, add .004 to the reading. For each 10°F below 80°F, subtract .004
from the reading.
Interpreting the Results of the Hydrometer Test
The approximate state of charge can be determined from the following table:
If the difference between the cells is .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 .050 or more, the battery with the low cell
should be replaced.
Figure 13-8 Hydrometer
SPECIFIC GRAVITY AT 80° STATE OF CHARGE
1.250 - 1.280 100%
1.220 - 1.240 75%
1.190 - 1.210 50%
1.160 - 1.180 25%
4 0
2 0
6 0
8 0
13 00
1.250
1.280
VIEW AT EYE LEVEL