Discharge Test - Club Car DS Villager 4 Maintenance And Service Manual Supplement

14
BATTERIES
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

DISCHARGE TEST

If the previous tests have failed to identify the problem, conduct a discharge test. The discharge test comes
closest to simulating actual vehicle operating conditions by continuously drawing current from the batteries
until voltage drops to 42.0 volts.
The discharge test is the hardest test on the batteries and the most time-consuming to perform. Use the bat-
tery discharge tester (CC P/N 101831901).
Performing the Discharge Test
1. Be sure the batteries are fully charged and that the electrolyte level is correct in all cells.
2. Connect the tester leads to the positive (+) post of battery no.1 and negative (–) post of battery no. 4
(Figure 14-7, Page 14-14).
Figure 14-7 DS Villager 4 4x12-Volt Battery
1. RED probe to battery no. 1 (+).
2. BLACK probe to battery no. 4 (-).
Page 14-14 2008-2011 IQ System Electric Vehicle Maintenance and Service Supplement
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
(+)
(–)
3
4
Discharge Test
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
1.245 – Float 1.235 –
0 0 does
= 1.245 not rise = 1.235
1
2
Battery Testing – 12 Volt
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
REQUIRED
ACTION
Charged
Bad no. 2 Cell
Discharged
Battery –
Recharge and
Recheck
no.3 Cell Dead
– Replace Battery