Club Car 2008-2011 Maintenance And Service Manual page 278

10
HIGH FREQUENCY CHARGER (ONBOARD)
Figure 10-4 Hydrometer Test
View at eye level.
Interpreting the Results of the Hydrometer Test: 12-Volt Batteries
The approximate state of charge can be determined from the following table:
SPECIFIC GRAVITY
(TEMPERATURE
CORRECTED)
1.250-1.280
1.220-1.240
1.190-1.210
1.160-1.180
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 with
the low cell should be replaced.
VEHICLE BATTERY
NO. NO.
12 1
54 3
38 2
22 4
Page 10-12 2008-2011 Domestic Battery Charger Maintenance and Service Manual
1.250
1.280
APPROXIMATE
STATE OF CHARGE
100%
75%
50%
25%
ELECTROLYTE CORRECTION
TEMPERATURE FACTOR
CELL 1
1.275 –
20 °F
–0.024 0.024 =
(–6.6 °C)
1.260 –
50 °F
–0.012 0.012 =
(10 °C)
1.200 +
100 °F
+.008 0.008 =
(37.8 °C)
1.240 –
80 °F
.000
(26.7 °C)
= 1.240
CORRECTED SPECIFIC GRAVITY
CELL 2 CELL 3 CELL 4
1.280 – 1.280 – 1.275 –
0.024 = 0.024 = 0.024 =
1.251 1.256 1.256
1.200 – 1.270 – 1.265 –
0.012 = 0.012 = 0.012 =
1.248 1.188 1.258
1.180 + 1.170 + 1.200 +
0.008 = 0.008 = 0.008 =
1.208 1.188 1.178
Float 1.235 –
1.245 –
0 0 does
= 1.245 not rise = 1.235
CELL 5 CELL 6
1.280 – 1.280 –
Sound Battery – Fully
0.024 = 0.024 =
1.251 1.256 1.256
1.270 – 1.260 –
0.012 = 0.012 =
1.253 1.258 1.248
1.180 + 1.198 +
0.008 = 0.008 =
1.208 1.188 1.198
1.250 –
1.240 –
0 0 0
= 1.250 = 1.240
Test Procedures
REQUIRED
ACTION
Charged
Bad no. 2 Cell
Discharged
Battery –
Recharge and
Recheck
no.3 Cell Dead
– Replace Battery