SECTION III. BATTERY, STORAAGE BB-501/U

TM 11-6140-203-14-3

EL4EC006

Figure 2-6. Battery, Storage BB-429/U, Cell Layout

SECTION III. BATTERY, STORAAGE BB-501/U

2-7. Tabulated Data for BB-501/U (fig. 2-7)

Type ................................ Nickel-cadmium (vented).

Approximately 0 F.

Number of cells ............... 20

(-17.8 C.) ........................ 12.6 ampere-hours at 24

Nomenclature of cell ........ Battery, Storage BB-613/U

volts or 25.2 ampere

Electrolyte ....................... Potassium hydroxide (KOH) 31

hours at 12 volts

percent (by weight( in distilled

Approximately -40 F.

water.

(-40 C) ............................ 8.4 ampere hours at 24 volts

or 16.8 ampere-hours at

12 volts.

Operating Range:

Current:

Temperature ............. -40 F.(-40 C.) to 165 F.

At temperature of:

(75.0 C.)

Approximately 75 F.

Atmospheric Pressure .... Sea level to 10,000 feet 20.6

(23.9 C.).......................... 2.8 amperes at 24 volts for 5

inches of mercury +/-0.1)

hours or 5.6 amperes at

Storage:

12 volts for 5 hours.

Duration.................... Unlimited, regardless of state of

Approximately -40 F

charge

(-40 C) ............................ 2.8 amperes at 23 volts for 3

Temperature ............. -80 F. (-62 C.) to 165 F.

hours or 5.6 ampere s at

(75 C.)

11.5 volts for 3 hours.

Atmospheric Pressure ......Sea level to 50,000 feet (3.4

Voltage Open Circuit ........ Approximately 13 volts or 26

inches of mercury+/-0.1).

volts (dependent upon

cable assembly used and

Electrical Data:

a fully charged battery

Rated 5-hour discharge

with a 24 hour rest period)

capacity at temperature of :

Approximately 75 F.

(23.9 C.) ......................... 14.0 ampere-hours at 24 volts or

Minimum Cycle Life (charge and

discharge) ................. 1,500 cycles

2-5