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

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 ELECTROLYTE
NO. NO. TEMPERATURE
12 1 20 °F (-6.6 °C)
35 6 90 °F (32.2 °C)
54 3 50 °F (10 °C)
69 5 80 °F (26.7 °C)
38 2 100 °F (37.8 °C)
22 4 80 °F (26.7 °C)

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. 6 last
(Figure 14-4, Page 14-9) or (Figure 14-5, Page 14-9).
FRONT
OF VEHICLE
4
5
BLACK PROBE
6
TO BATTERY NO. 6 (–)
Figure 14-4 Turf 1/Carryall 1 Battery Discharge Test
CORRECTION
FACTOR
1.275 –0.024
– 0.024
1.155 + 0.004
+ 0.004
1.260 –0.012
– 0.012
0.000
1.200 + 0.008
+ 0.008
0.000
RED PROBE
TO BATTERY
NO. 1 (+)
2
3
1
2008-2011 IQ System Electric Vehicle Maintenance and Service Supplement
CORRECTED SPECIFIC GRAVITY
CELL 1 CELL 2 CELL 3
1.280 – 0.024 1.280 – 0.024
= 1.251 = 1.256 = 1.256
1.165 + 0.004 1.160 + 0.004
= 1.159 = 1.169 = 1.164
1.200 – 0.012 1.270 – 0.012
= 1.248 = 1.188 = 1.258
1.250 – 0 1.255 – 0 1.230 – 0
= 1.250 = 1.255 = 1.230
1.180 + 0.008 1.170 + 0.008
= 1.208 = 1.188 = 1.178
1.240 – 0 1.245 – 0 Float does
= 1.240 = 1.245 not rise
Figure 14-5 DS Villager 4 6x8-Volt Battery Discharge
Battery Testing – 8 Volt
REQUIRED
ACTION
CELL 4
1.280 – 0.024 Sound Battery –
= 1.256 Fully Charged
Discharged
1.165 – 0.004
Battery –
= 1.169
Recharge
1.270 – 0.012
Bad no. 2 Cell
= 1.258
Weak no. 3
1.250 – 0
Cell – Catch-up
= 1.250
Charge
Discharged
1.180 + 0.008 Battery –
= 1.188 Recharge and
Recheck
no.3 Cell Dead
1.250 – 0
– Replace Bat-
= 1.250
tery
Test
Page 14-9
14