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
