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Symptoms
Electrolyte overflow.
Inequal electrolyte specific gravity or
electrolyte specific gravity too low.
Low voltage in the cells in open circuit.
Battery cells temperature too high (over 113°F
(45°C)).
Battery incapable of supporting regular
operation.
31210031
SECTION 8 - GENERAL SPECIFICATIONS & OPERATOR MAINTENANCE
Battery troubleshooting
Probable causes
Filling done before the charge.
Cells overfilled.
Overcharge.
Filling done before the charge.
Loss of electrolyte due to overflow.
Stratification of the electrolyte.
Electrolyte specific gravity too low.
Short-circuit.
Problem with the charger.
Bad air circulation during charge.
Cell weak or faulty
Cells shorted.
Battery under charged.
Cell faulty.
Faulty cable or connection.
Battery at the end of its service life.
Fill battery cells after the charge.
Never charge battery if electrolyte specific gravity is above 1,240 kg/l.
Fill battery cells after the charge.
Perform an equalization charge.
Contact your JLG Distributor/Product Support.
Refer to "electrolyte specific gravity too low".
Clean battery top.
Get the charger checked by a technician.
Open access doors to batteries during charge.
Reduce temperature of the area where the battery is charged (artificial ventilation).
Change battery cell.
Perform an equalization charge.
Replace faulty cell.
Check wire condition and connection.
Replace the battery.
– JLG Lift –
Solutions
8-7
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