Batteries (Electric Machines); Quarterly Battery Maintenance - JLG T500J Service And Maintenance Manual

3.25 BATTERIES (ELECTRIC MACHINES)

The electrical system is a 24 volt system, supplied by four, six
volt, 220 amp-hour batteries. Two batteries are located on the
right side of the frame and two are located on the left side. A
gray quick disconnect is used to disconnect electrical power
between the batteries and the machine if needed.
NOTE: Battery weight is important for stability. Each battery
weighs 59 lbs. (26.8 kg). Do not use batteries that are not
approved by JLG.
IF REPLACING A BATTERY, EACH NEW BATTERY MUST WEIGH AT LEAST 59 LBS
(26.8 KG). FAILURE TO REPLACE THE BATTERY WITH ONE OF THE CORRECT
WEIGHT WILL RESULT IN A TIPOVER HAZARD WHICH COULD RESULT IN SERI-
OUS INJURY OR DEATH.

Quarterly Battery Maintenance

1. Open battery compartment cover to allow access to bat-
tery terminals and vent caps.
WHEN ADDING WATER TO BATTERIES, ADD WATER UNTIL ELECTROLYTE COV-
ERS PLATES. DO NOT CHARGE BATTERIES UNLESS ELECTROLYTE COVERS THE
PLATES.
NOTE: When adding distilled water to batteries, non-metallic con-
tainers and/or funnels must be used.
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To avoid electrolyte overflow, add distilled water to batter-
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ies after charging.
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When adding water to the battery, fill only to level indi-
cated or 3/8" above separators.
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SECTION 3 - CHASSIS & TURNTABLE
2. Remove all vent caps and inspect electrolyte level of
each cell. Electrolyte level should be to the ring approxi-
mately one inch from top of battery. Fill batteries with
distilled water only. Replace and secure all vent caps.
3. Remove battery cables from each battery post one at a
time, negative first. Clean cables with acid neutralizing
solution (e.g. baking soda and water or ammonia) and
wire brush. Replace cables and/or cable clamp bolts as
required.
4. Clean battery post with wire brush then re-connect
cable to post. Coat non-contact surfaces with mineral
grease or petroleum jelly.
5. When all cables and terminal posts have been cleaned,
ensure all cables are properly positioned and do not get
pinched. Close battery compartment cover.
6. Start hydraulic system and ensure that it functions prop-
erly.
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