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TROUBLESHOOTING ON THE BATTERY
DEFECT CAUSE REMEDY
• Battery runs down rapidly during the work
period
• Battery does not have an adequate capacity for
the type of work
• Battery is very old
• Battery not completely charged
• Moderate current consumption or charge more frequently
• If necessary, replace the battery
• Check the battery charger
• Battery runs down rapidly
• Low voltage, truck goes slowly during work
• Electrolyte heats up
• Excessive current consumption
• Truck motor overloaded, especially when going
up a slope
• Battery charger with high current at end of
charge
• Check the load lifted by the truck
• Lubricate and check the motor mechanical parts
• If necessary, fit a battery with a
higher capacity
• Check the battery charger
• Density not the same
• Contacts shorting to earth
• Current leakage
• Faulty insulation of some electric device in the
truck or battery
• Battery has cracked cells or dirty elements
• Metal case has faulty insulation
• Intermediate current sockets
• Examine the insulation
• Clean the case and the elements
• Renew the insulating coating
• Repeat the final charge
• Eliminate too high and/or continuous intermediate current
sockets
• Battery runs down rapidly
• Truck slow, low voltage
• Acid heats up
• Density not the same
• Density too low while charging
• Charge voltage too low
• High water consumption
• Plates short circuiting in some battery elements • Replace faulty elements
• Battery runs down rapidly
• Electrolyte density too low during
charging
• Electrolyte density too low due to acid leakage
• Frequent and excessive top-ups
• If the density does not increase with a trickle charge, the
electrolyte density must be restored
by adding acid.
• Battery runs down rapidly
• Truck slow, poor performance
• Charge voltage too high
• Charge current too low
• Poles loose or oxidized • Tighten the contacts of the poles and clean them accurately
• Acid heats up
• Charge time too long
• High water consumption
• Charge time set too long
The timer intervenes late and
prolongs the charge
• Adjust the point of intervention of the timer
• Battery runs down rapidly
• Density not the same
• Density too low during charging
• Charge time set too short
The timer intervenes early
• Insufficient time for recharging
• Adjust the point of intervention of the timer
• Increase the recharging time
• Replace the battery charger with a more powerful one
Plate corrosion
Sulfation
Plate warpage and active substance freeing
Improper charging
End of life
Repeated procedures
at over-discharge
Long time
Short circuit
between cells
of battery
of the battery
overdischarge
without operation
and overcharge
Charging current
Defect of electrolyte
insufficient
Electrolyte
excessive
Electrolyte
Temperature
Ambient
defective
of the battery
overdischarge
capacity
excessive
Battery defect
Spacer
Improper
Crack or
Overcharge
defective
water
supply
chipping of cell
of the cells
Imperfect
connection
of the terminal
Deposition of free
Fouled terminal or
active substance
at bottom of cell
connecting plug
Short circuit
Electrolyte leakage end reduction
Loosened or corroded connection
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