Discharge Test - Club Car Precedent 2014 Maintenance And Service Manual

15
Battery Testing – 8 Volt

DISCHARGE TEST

NOTE: Discharge time is dependent on electrolyte temperature. Note and record electrolyte temperature before
performing the Discharge Test. Calculate the Discharge Time to Shut-Off Point for the specific set of batteries
being tested. See Calculate the Discharge Time to Shut-Off Point Reference Table on page 15-7.
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 (CC P/N 101831901).
IMPORTANT: Be sure batteries have sufficient electrolyte to cover plates by approximately 1/2 inch (13 mm)
and are fully charged prior to beginning test. If electrolyte level is insufficient to obtain valid readings,
add only enough distilled water to cover the plates, then recharge the batteries before proceeding with
the Discharge Test.
Performing the Discharge Test
1
(Viewed from driver side of vehicle)
1. RED probe to battery no. 1 (+).
2. BLACK probe to battery no. 6 (-).
2500-30100-10411
Figure 15-3 Battery Discharge Test – 6 x 8 Volt Battery
Configuration
1. Be sure the batteries are fully charged and that the electrolyte level is correct in all cells.
2. Using a battery thermometer (CC P/N 1011767), record electrolyte temperature of cell no. 2 (second cell from
positive post) in each battery.
3. Connect the tester leads to the positive (+) post of battery no.1 and negative (–) post of battery no. 6 (Figure
15-3, Page 15-6).
4. Reset discharge tester. Turn the tester ON and record the start time. Allow tester to run until the automatic
shut-off time (based on electrolyte temperature reference table on page 15-7) is nearly reached.
5. Set the discharge tester to function 3 and check battery set voltage. Check battery set voltage every 10 minutes
throughout the rest of the test. As soon as the battery set voltage reaches 0.5 volt above the automatic shut-off
point (42.0 volts), use a multimeter to measure and record the voltage of each battery to the nearest 0.01 volt.
See following NOTE.
NOTE: Make certain that discharged battery voltages are taken with the battery discharge tester running. The tester
will shut off at 42.0 volts. DO NOT record battery voltages with discharge tester OFF. This can easily be done
by recording individual battery voltages once the discharge machine reaches 42.5 volts.
Page 15-6 2014 Precedent ® Golf Car Maintenance and Service Manual
BATTERIES: ELECTRIC VEHICLE WITH
POWERDRIVE CHARGER