Battery Maintenance; How To Charge The Battery; Equalizing Charge; Normal Charge - Yale 524150797 Maintenance Manual

Battery Maintenance

HOW TO CHARGE THE BATTERY

WARNING
DO NOT put tools on the battery.
If the lift truckwas operatedwith a lowbattery,
check all contactors for welded contacts before a
charged battery is connected.
Make sure the key switch is in the OFF position
and the park brake is set before connecting the
battery.
The acid in the electrolyte can cause injury. If the
electrolyte is spilled, use water to flush the area.
Use a solution of sodium bicarbonate (soda) and
water to make the acid neutral. Acid in the eyes
must be immediately
continuously for 15 minutes, then seek medical
attention.
Batteries generate explosive fumes. Keep the
vents in the caps clean. Keep sparks or open
flames away from the battery area. DO NOT make a
spark from the battery connections. Disconnect
the battery when doing maintenance.
CAUTION
Never connect the battery charger plug to the plug
of the lift truck. You can damage the electronic
controller. Make sure the battery charger voltage is
the correct voltage for the battery.
Correct use of the hydrometer and proper operation of
the battery charger is important. Operate the battery
charger according to the instructions of the charger
manufacturer. Never let the battery discharge below
the minimum value given by the battery manufacturer.
A fully charged battery will have a specific gravity of
1.265 to 1.310 at 25°C (77°F). See Table 2. Never
charge a battery at a rate that will raise the electrolyte
temperature above 49°C (120°F). Never permit a
battery to stay discharged for long periods.
16
Battery Maintenance
flushed with water
Table 2. Specific Gravity Corrections
Specific Electrolyte
Gravity Temperatur
Reading e
1.210 31°C (88°F)
1.210 27°C (81°F)
1.210 25°C (77°F)
1.210 18°C (64°F)
+0.001 for each 1.7°C (35°F) from the 25°C (77°F).
Base Value (Degrees C x 1.8) + 32 = Degrees F.

Equalizing Charge

NOTE: Many customers have battery chargers that
can follow a program to automatically charge a battery
according to recommendations of the battery
manufacturer. Use the recommendations of the battery
manufacturer for charging the battery. Use only battery
chargers approved by the battery manufacturer or
dealer.
This charge is at a low rate and balances the charge in
all of the cells. The equalizing charge is normally given
approximately once a month. It is a charge at a slow
rate for 3 to 6 hours in addition to the regular charging
cycle.
DO NOT give an equalizing charge more than once a
week. The most accurate specific gravity
measurement for a charged battery will be after an
equalizing charge. If the difference in specific gravity is
more than 0.020 between cells of a battery after an
equalizing charge, there may be a cell that has a
malfunction. Consult your battery dealer.

Normal Charge

NOTE: Many customers have battery chargers that
can follow a program to automatically charge a battery
according to recommendations of the battery
manufacturer. Use the recommendations of the battery
manufacturer for charging the battery. Use only battery
chargers approved by the battery manufacturer or
dealer.
This charge is normally given to a battery that is
discharged from normal operation. Many customers
charge the battery at regular intervals that depend on
use. This procedure will keep the battery correctly
charged if the battery is not discharged below the limit.
8000 YRM 1666
Correction Correct
Points Value
+0.003 1.213
+0.001 1.211
+0.000 1.210
-0.004 1.206