TM 11-6140-203-14-4&P
2. Outer element: 2.8-3.0 ohms.
cadmium battery since the charge will be lost through
3. Combined 2.2-2.4 ohms.
normal leakage and it will be deep-cycle discharged and
recharged prior to returning to service. Protect from
(b) Power consumption: 365 watts at 29
freezing and excessive heat.
volts dc.
(4) When the nickel-cadmium battery is to be
(c) High resistances.
If very high
returned to service, perform the full quarterly procedure
resistances are measured directly across the heating
contained in paragraph 5-6.
elements then it is an indication that a heater element is
(b) Hold-Ready Administrative Storage
defective and must be replaced.
Procedures. The following procedure applies when a
nickel-cadmium battery is placed in a hold-ready
5-14.
Battery Case Vent
administrative storage while the end item of equipment
For BB-693A/U batteries equipped with a cover that
is in the repair or overhaul process.
contains manual vents, only one automatic valve that
(1) Remove the nickel-cadmium battery from
releases pressure from within the case is required. The
the equipment.
specified valve is 3.0 t0.6 psig.
(2) Perform those quarterly maintenance
procedures covered by paragraphs 5-6a through f.
5-15.
Administrative Storage of Nickel Cadmium
(3) Perform capacity discharge test of
Batteries
Nickel-cadmium batteries can be placed in administrative
Deep discharge in accordance with paragraph 5-6c
storage because of no immediate operational need and
except the minimum shorting time shall be only 8 hours.
the necessity to reduce the maintenance workload; or to
Connect shorting spring across battery terminal J2 and
hold it ready while the associated end item of equipment
remove individual cell shorting device.
is in the repair or overhaul process or for temporary
(4) Place the nickel-cadmium battery in the
excess quantities of direct exchange batteries. The
ready-hold administrative storage area. Protect from
nickel-cadmium battery is handled differently under each
freezing and excess heat.
set of circumstances.
(5) When the nickel-cadmium battery is
a Normal Administrative Storage Procedures The
required for installation in the repaired or overhauled
following procedure applies when a nickel cadmium
end item of equipment, remove it from administrative
battery is being placed in normal administrative storage.
storage. Remove the shorting device from across the
(1) Remove the nickel-cadmium battery from
terminals of the battery.
the end item of equipment.
(6) Charge the nickel-cadmium battery in
(2) Perform the cleaning procedures in
accordance with the instructions contained in paragraph
(3) Place the nickel-cadmium battery in the
will start at this point in time.
administrative storage area making sure that the
(7) Install the nickel-cadmium battery in the
connector terminals are not accidentally short circuited.
end item equipment.
It is not necessary to discharge the nickel
5-20
