Discharge Test - Club Car Turf 252 2007 Maintenance And Service Manual

25
Battery Testing
VEHICLE BATTERY
NO. NO.
12 1
35 6
54 3
69 5
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 battery
discharge tester (CCI 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. 8.
3. Check and record the electrolyte temperature of the battery packs. Check cell no. 2 (second cell from positive
post) in each battery.
4. Reset discharge machine and turn the tester ON.
5. When the batteries have been discharging for approximately 60 minutes, set the discharge machine to function 3
and check battery set voltage. Check voltage every 10 minutes throughout the rest of the test. As soon as the
battery set voltage reaches 0.5 volts above the shut-off point (42.0 volts), use a multimeter to measure individual
battery voltages. Measure and record the voltage of each battery to the nearest 0.01 volt. See following NOTE.
NOTE: The tester will shut off automatically when shut-off voltage is reached.
Interpreting Discharge Test Results
1. If discharge time is 60 minutes or higher, the problem is not with the batteries.
2. If discharge times are low (less than 60 minutes), replace batteries below 5.0 volts.
Page 25-10 2007-2009 Turf 252, Carryall 252 and XRT 900 Maintenance and Service Manual
ELECTROLYTE CORRECTION
TEMPERATURE FACTOR
20 °F (-6.6 °C) – 0.024
90 °F (32.2 °C) + 0.004
50 °F (10 °C) – 0.012
80 °F (26.7 °C) 0.000
100 °F (37.8 °C) + 0.008
80 °F (26.7 °C) 0.000
BATTERIES: ELECTRIC VEHICLES
CORRECTED SPECIFIC GRAVITY
CELL 1 CELL 2
1.275 –0.024 1.280 – 0.024
= 1.251 = 1.256
1.155 + 0.004 1.165 + 0.004
= 1.159 = 1.169
1.260 –0.012 1.200 – 0.012
= 1.248 = 1.188
1.250 – 0 = 1.255 – 0 =
1.250 1.255
1.200 + 0.008 1.180 + 0.008
= 1.208 = 1.188
1.240 – 0 = 1.245 – 0
1.240 = 1.245
REQUIRED
ACTION
CELL 3
1.280 – 0.024 Sound Battery –
= 1.256 Fully Charged
Discharged
1.160 + 0.004
Battery –
= 1.164
Recharge
1.270 – 0.012
Bad no. 2 Cell
= 1.258
1.230 – 0 = Weak no. 3 Cell –
1.230 Catch-up Charge
Discharged
1.170 + 0.008 Battery –
= 1.178 Recharge and
Recheck
Float does no.3 Cell Dead –
not rise Replace Battery