Service manual

2023 Service Manual V1.0
11
11-7
BATTERY SYSTEM
When testing with a load tester you are looking for a difference between cells of the batter-
ies. All the battery cells should have similar readings. Any battery that contains a cell that
has a value lower than .050 of the rest of the cells indicates you have a bad battery.
LOAD TESTING
Load test with a load tester:
Make sure batteries are fully charged. Disconnect batteries from the machine and each
other so each battery can be tested individually. Using a battery load tester test each
battery at either the fixed load of the tester or a 120 amp of load on a variable tester. The
batteries should be able to maintain a voltage of 10.8 volts or greater for 15 seconds on
12 volt batteries and 4.9 volts or greater for 15 seconds on a 6 volt battery. If they can not
maintain their voltage while under load they are bad.
Load test using machine systems as a load:
Using a volt meter measure the voltage of each battery while the machine is under full load
(all systems operating). If any battery shows a voltage of less than 80% of the battery with
the highest voltage that battery is bad.