Publication No: EN-NP24-12R-01 • January 2005
Dimensions
Spec i f icat ions
• NOMINAL VOLTAGE: 12V
• NOMINAL CAPACITY:20 hr. rate of 1.25A to 10.5V 25.0Ah10 hr. rate of 2.25A to 10.5V 22.5Ah
5 hr. rate of 4.0A to 10.2V 20.0Ah1 hr. rate of 15.0A to 9.60V 15.0Ah
• WEIGHT (approx.): 19 pounds (8.8 Kg)
• ENERGY DENSITY (20 hr. rate):1.35 WH/cubic inch (79 WH/liter)
• SPECIFIC ENERGY (20 hr. rate):15.8 WH/pound (35 WH/Kg)
• INTERNAL RESISTANCE OF CHARGED BATTERY: 10 milliohms (approx.)
• MAXIMUM DISCHARGE CURRENT WITH STANDARD TERMINALS: 150 amperes
• MAXIMUM SHORT-DURATIONDISCHARGE CURRENT:500 amperes
• OPERATING TEMPERATURE RANGE: CHARGE 50F to 1220F
(-150C to 500C)DISCHARGE -40F to 1400F
(-200C to 600C)
• CHARGE RETENTION (shelf life) at 68˚F (20˚C):1 month 97%3 months 91%6 months 85%
• LIFE EXPECTANCY:STANDBY USE 3 to 5 yearsCYCLE USE (approx.):100% depth of discharge 250 cycles 50% depth of discharge 550 cycles30% depth of discharge 1200 cycles
• SEALED CONSTRUCTION: Can be operated in any position without leakage.
• STANDARD TERMINAL:Receptacle M5
• HOUSING MATERIAL: ABS Resin
• OPTIONAL:Container and cover made from Flame Retardant ABS (UL94-V0/L.O.I.>28%)
• HARDWARE:2-M5-.8 x 12mm Bolt w/lock washer & flat washer
NPNP24-12R
NP24-12RFRSealed Rechargeable
Lead-Acid Battery
12V, 24Ah
DIMENSIONS: MM (INCHES)
Terminal
DIMENSIONS: MM (INCHES)
Φ12.0(0.47)
M5
UL listing pending - File No MH16464
Represented by:
CHARGING METHODS (At 20ºC) Cycle use: Maximum charging current 0.25CCharging voltage 14.4 to 15.0V
Standby use: Float charging voltage 13.50 to 13.80VCAUTION •Avoid short circuit
•Do not charge in a sealed container.
When the battery will be used by current in excess of 3C, consult with EnerSys prior to use.
SELF DISCHARGE CHARACTERISTICS OPEN CIRCUIT VOLTAGEVS REMAINING CAPACITY
CYCLE SERVICE LIFE IN RELATIONTO DEPTH OF DISCHARGE
FLOAT SERVICE LIFE
REM
AINI
NG C
APAC
ITY
(%)100
75
50
25
0
(AH%)
120
100
80
60
40
20
0
(V)14.0
13.0
12.0
11.0
10.0
STORAGE TIME (MONTHS)
PERC
ENTA
GE O
F CA
PACI
TY A
VAIL
ABLE
PERC
ENTA
GE O
F CA
PACI
TY A
VAIL
ABLE
NUMBER OF CYCLES
TESTING CONDITIONS: DISCHARGE CURRENT: 0.17C AMP. (F.V. 1.7V/CELL)CHARGING CURRENT: 0.09C AMP.CHARGING VOLUME: 125% OF DISCHARGED CAPACITYAMBIENT TEMPERATURE: 200C TO 250C (680F TO 770F)
TESTING CONDITIONS: FLOATING VOLTAGE 2.25 TO 2.30V/CELLAMBIENT TEMPERATURE: 200C TO 220C (640F TO 720F)
OPEN
CIR
CUIT
VOL
TAGE
REMAINING CAPACITY (%)
3 6 9 12 15 18 0 20 40 60 80 100
(AH%)120
100
80
60
40
20
0
LIFE (YEARS)
1 2 3 4 5 5.5
200 400 600 800 1000 1200 1400
200C (680F)
AT 250C (770F)
300C (860F)400C (1040F)
30% DEPTH OF DISCHARGE50% D.O.D.100% D.O.D.
PERC
ENTA
GE O
F CA
PACI
TY A
VAIL
ABLE
TEMPERATURE EFFECTS IN RELATIONTO BATTERY CAPACITY
DISCHARGE CHARACTERISTIC CURVES AT 250C (770F)
TERM
INAL
VOL
TAGE
Publ
icat
ion
No:
EN
-NP2
4-12
R-01
• Ja
nuar
y 20
05Su
bjec
t to
rev
isio
ns w
ithou
t pr
ior
notic
e. E
.&O
.E.
www.enersys.com
EnerSys EMEA
Brussels, BelgiumTel:+32 (0)2 247 94 47
EnerSys Asia
Guangdong, ChinaTel:+86-755-2689 3639
EnerSys Limited
Rake Lake,Clifton Junction,Swinton, ManchesterM27 8LR, UKTel:+44 (0) 161 794 4611Fax:+44 (0) 161 727 3809
Global Headquarters
P.O. Box 14145Reading, PA 19612-4145USATel: +1-610-208-1991
+1-800-538-3627Fax:+1-610-372-8613