TM
Publication No: US-NP18-12B-01 • November 2002
RECOGNIZED BY UL, File No. MH 16464
Dimensions
Terminal
Specifications
•NOMINAL VOLTAGE: 12V
•NOMINAL CAPACITY:
20 hr. rate of 0.86A to 10.5V 17.2Ah
10 hr. rate of 1.6A to 10.5V 16.0Ah
5 hr. rate of 2.9A to 10.2V 14.5Ah
1 hr. rate of 10.3A to 9.60V 10.3Ah
• WEIGHT (approx.): 13.70 pounds
(6.2 kgs.)
• ENERGY DENSITY (20 hr. rate):
1.47 WH/cubic inch (90 WH/liter)
• SPECIFIC ENERGY (20 hr. rate):
15.1 WH/pound (33.28 WH/kg)
• INTERNAL RESISTANCE OF CHARGED
BATTERY:
11 milliohms (approx.)
• MAXIMUM DISCHARGE CURRENT
WITH STANDARD TERMINALS:
150 amperes
• MAXIMUM SHORT-DURATION
DISCHARGE CURRENT:
450 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 years
CYCLE USE (approx.):
100% depth of discharge 250 cycles
50% depth of discharge 550 cycles
30% depth of discharge 1200 cycles
• SEALED CONSTRUCTION:
Can be operated in any position
without leakage.
• STANDARD TERMINAL:
Bolt fastened terminal
• 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/nuts,
lock washer & flat washer
NP18-12B
NP18-12BFR
Sealed Rechargeable
Lead-Acid Battery
12V, 17.2Ah
DIMENSIONS: MM (INCHES)
DIMENSIONS: INCHES
INCH = MM
.427 12.00
.453 11.50
.433 11.00
.216 5.50
.079 2.00
EnerSys Inc.
P.O. Box 14145
Reading, PA 19612-4145
USA
Tel:+1-610-208-1991
+1-800-538-3627
EnerSys EMEA
Brussels, Belgium
Tel:+32 (0)2 247 94 47
EnerSys Asia
Guandong, China
Tel:+86 755 2689 3639
Represented by:
CHARGING METHODS (At 20ºC) Cycle use: Maximum charging current 4.3A
Charging voltage 14.4 to 15.0V
Standby use: Float charging voltage 13.50 to 13.80V
CAUTION •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, Inc. prior to use.
SELF DISCHARGE CHARACTERISTICS OPEN CIRCUIT VOLTAGE
VS REMAINING CAPACITY
CYCLE SERVICE LIFE IN RELATION
TO DEPTH OF DISCHARGE
FLOAT SERVICE LIFE
REMAINING CAPACITY
(%)
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)
PERCENTAGE OF CAPACITY AVAILABLE
PERCENTAGE OF CAPACITY AVAILABLE
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 CAPACITY
AMBIENT TEMPERATURE: 200C TO 250C (680F TO 770F)
TESTING CONDITIONS: FLOATING VOLTAGE 2.25 TO 2.30V/CELL
AMBIENT TEMPERATURE: 200C TO 220C (640F TO 720F)
OPEN CIRCUIT VOLTAGE
REMAINING CAPACITY (%)
36912 15 18 020 40 60 80 100
(AH%)
120
100
80
60
40
20
0
LIFE (YEARS)
123455.5
200 400 600 800 1000 1200 1400
200C (680F)
AT 250C (770F)
300C (860F)
400C (1040F)
30% DEPTH OF DISCHARGE
50% D.O.D.
100% D.O.D.
PERCENTAGE OF CAPACITY AVAILABLE
TEMPERATURE EFFECTS IN RELATION
TO BATTERY CAPACITY
DISCHARGE CHARACTERISTIC
CURVES AT 250C (770F)
TERMINAL VOLTAGE
Publication No: US-NP18-12B-01 • November 2002
www.enersysinc.com
