ELECTRICAL
TRUCK SERVICE MANUAL
is on charge at the normal rate as specified in Chart
B.
Number
Normal
Battery
Volts
of
Charge
Plates
Rate (Amps)
1424X
6
99
15
CHART B
The battery voltage of a fully charged battery on
charge at the normal rate should read as shown in
Chart C.
Temperature
6-Volt-Battery
80F
7.5 -7.8 volts
100F
7.2 -7.8 volts
110F
7.05- 7.65 volts
120F
6.9 -7.5 volts
CHART C
4. Connect battery to charger unit in series, connecting
A battery is fully charged when battery voltage
positive terminal outlet from the supply line to the
values are as shown in Chart C and there is no
positive terminal of the first battery. Connect the
further rise in voltage over two successive readings
negative terminal of the first battery to the positive
taken at one-half hour intervals.
terminal of the second battery and so on through the
number of batteries being charged. (Do not exceed
7. Add water as necessary; disconnect the batteries
the capacity of the charging equipment in the
from charging line; replace vent plugs; wash and dry
number of batteries being charged at one time. )
tops of batteries and return to service or the storage
The last battery must have its negative terminal
rack.
connected to the negative outlet of the charging unit.
Putting Dry Charged Batteries into Service
5. Adjust charging rate in amperes to the lowest normal
charge rate of the smallest size battery according to
Dry charged batteries can be used immediately after
the accompanying chart (B). Batteries should
activating. Prepare dry charge battery for service as
remain on charge for a period of time sufficient to
follows:
obtain normal voltage and specific gravity readings
of each cell. Required length of time will vary from
1. Remove or destroy any sealing device used to close
12 to 48 hours, depending on state of discharge at
or restrict the vent openings.
time battery was placed on charge and the rate of
charge.
2. Fill the cells 1/4 to 1/2 inch above the separators or
to the indicator level with sulphuric acid.
Temperature readings should be taken frequently to
prevent the electrolyte temperature from exceeding
3. The battery is now ready for use. If the vehicle is to
125F at any time. If temperature does rise above
be driven considerable mileage after battery
125F, the charge rate should be reduced to allow
activation, no boosting charge is required. However,
electrolyte temperature to drop below 125F.
if it is not driven as noted above, a boosting charge
6. Battery voltage is determined by normal electrolyte
temperature of 80F. Voltage readings are to be
taken while the battery
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