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Page Title:
Storage For Thirty Days or More |
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 TM 10-3930-644-14 & P
h. Give battery a minimum charge. Charge
d. As new units are sold, install proper
12 volt batteries at 35 amps. for ten
batteries that were in storage for the
minutes or until the temperature of the
longest period.
electrolyte reaches 80F.
Should
a
sulphated
battery
be
encountered, the battery must be slow
i. Be sure to date code the battery before
charged at five to six amps by a constant
installing it in the vehicle. Use a date
current type of charge in order to
code ring and gently stamp the code
reconvert the plates to pure lead and lead
indicating the month and year when it is
peroxide. The battery is fully charged
installed on top of the negative post.
when all cells are gassing or bubbling
freely and the specific gravity reading
J. If the outdoor temperature is below 40F.,
remains constant at 1.255 or higher,
or if the battery is not to be put into service
corrected to 80F., for two successive
within 24 hours after activation, it should
readings taken at hourly intervals.
be fully charged (1.255 or higher specified
gravity).
e. If a battery is installed in equipment used
as a demonstrator, it should be checked
k. After electrolyte has been added to a dry
and recharged, if necessary, at least every
charged battery, it becomes a "wet"
other thirty days. Although the battery
battery and should be maintained in the
may continue to start the equipment for
same way as any other "wet" battery.
several months, it will be damaged if it is
allowed to become sulphated.
Storage For Thirty Days or More
B. SERVICE (TESTING)
If any battery equipped vehicles are to remain
in inventory storage for longer than thirty days,
1. Use of a Hydrometer
the batteries should be handled as follows:
a. Squeeze the rubber bulb and insert the
a. If necessary, add distilled water to bring
nozzle in the cell, release the bulb slowly,
the electrolyte to the proper level. Charge
drawing electrolyte up into the barrel.
the battery if the specific gravity is 1.240
or below, corrected to 80F.
Then,
b. Adjust the electrolyte level in the barrel so
remove the battery from the unit and store
the float rides free of the bottom, but is not
in a cool, dry location shielded from direct
striking the top.
sunlight and away from heat duct outlets.
Do not stack batteries on top of one
c. Hold the hydrometer in vertical pos ition,
another as damage to the plates may
making certain the float moves freely, then
result.
read the scale at the level of the
electrolyte in the barrel.
Indicate the date the battery is placed in
storage with chalk on the battery case.
NOTE
For accurate results in extreme
b. Check the electrolyte level and specific
temperatures, make corrections as
gravity every 30 days.
described in Paragraph 5, this
Section.
c. Whenever the specific gravity falls to
1.220 or below, corrected to 80F.,
d. Return electrolyte to the cell from which it
recharge the battery.
This will be
was removed.
necessary approximately every thirty days
in warm weather and a longer period in
CAUTION
cooler weather.
Before recharging be
Handle hydrometer carefully when
sure the electrolyte level is correct.
making tests, after completing tests,
flush hydrometer with clean water.
The date batteries in storage are
recharged can also be indicated on the
battery case with chalk.
R-146-1
3-74
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