Figure 7-2. Battery Test Fixture

TM 5-6350-262-14/11

NAVELEX 0967-LP-466-9112

TO 31S9-4-39-1

Figure 7-2. Battery Test Fixture.

NOTE

Recharging Batteries with Auxiliary Battery

Charger. If it is desirable to recharge the J-SIIDS

The value of resistance which must be

batteries utilizing a battery charger or power supply other

used to limit the current will decrease as

than that in the monitor cabinet the following proce-

the battery becomes charged. When

dures should be followed.

the battery is initially placed on charge

(1) The charging voltage must be maintained

use the highest value of resistance and

between 30 and 31 volts d.c.

verify that the current is below the

(2) The charging current into the batteries must

be limited below specified values either with an

maximum allowable. Once the battery

adjustable current limit in the power supply (this is the

has partially charged, this resistance

preferred method) or by placing a high wattage resistor

may be decreased in order to shorten

in series with the battery. The exact value of the resistor

the charging time. In no case should a

will vary depending upon the capacity of the battery, the

series resistor smaller than the lower

length of time that has elapsed since the batteries were

limit specified be used.

last charged, and the storage temperature.

The

maximum charging current for each battery and the

(3) As the battery charges, the current which it

approximate range of resistance which must be used if a

will accept will gradually decrease. When the charging

current limiting supply is not available are as follows:

cur- rent is reduced to approximately the following levels

Maximum charge

the battery is recharged and must be removed from the

Battery

current (amps)

Approximate resistance

charger.

ohms

watts

Battery

Current at full charge (amp)

CF24V5

0.800

5-15

CF24V5

0.075

CF24V30

5.000

1-3

100

CF24V30

0.200

NOTE

Some batteries may still accept 25%-

50% more current than specified, even

when fully

Change 2 7-6.2