The rechargeable batteries are lead-lead dioxide
systems. The dilute sulfuric acid electrolyte is
(12V4.0Ah/20hr)
absorbed by separators and thus immobilized.
Should the battery be accidentally overcharged producing bydrogen and oxygen, Special
one-way valves allow the gases to escape thus avoiding excessive pressure build-up. Otherwise, the battery is
completely sealed and is, therefore, maintenance-free, leak proof and usable in any position.
NP4-12
Battery Construction
Component
Positive plate
Negative plate
Container
Cover
Safety valve
Terminal
Separator
Electrolyte
Raw material
Lead dioxide
Lead
ABS
ABS
Rubber
Copper
Fiberglass
Sulfuric acid
General Feature
Performance Characteristics
Absorbent Glass Mat(AGM) technology for
efficient gas recombination of up to 99% and
freedom from electrolyte maintenance or
water adding.
Not restricted for air transport-complies with
IATA/ICAO Special Provision A67.
UL-recognized component.
Can be mounted in any orientation.
Computer designed lead, calcium tin alloy
grid for high power density.
Long service life, float or cyclic applications.
Maintenance-free operation.
Low self discharge.
Capacity
77°F(25 )
℃
Internal
Resistance
Capacity
affected by
Temperature
(20 hour rate)
Self-Discharge
℃
68°F(20 )
……………… 12V
……………… 6
Length(mm/inch) ……………… 90/3.54
Width(mm/inch ……………… 70/2.76
Height(mm/inch) ……………… 101/3.98
Total Height(mm/inch) ………… 107/4.21
Approx. Weight(kg/lbs) ………… 1.35/2.98
Capacity after 6 month storage
80%
Capacity after 12month storage
60%
： ～13.8 V/77°F/(25℃)
Cycle:14.5～14.9 V/77°F/(25℃)
Max. Current：1A
Charge
(Constant
Voltage)
Float 13.6
Discharge Constant Current (Amperes at 77° F25
End Point
Volts/Cell
70
7
0
1
5min
10min 15min 30min
℃)
1h
3h
5h
10h
20h
4.10
2.50
1.15
0.72
0.39
0.21
3.93
2.41
1.10
0.72
0.39
0.21
3.75
2.32
1.05
0.71
0.38
0.20
6.10
4.56
2.25
1.00
0.70
0.38
0.20
2.79
3.39
2.14
0.95
0.68
0.37
0.19
1.60V
14.0
8.65
7.05
1.65V
13.2
8.15
6.70
1.70V
12.4
7.72
6.39
1.75V
11.6
7.31
1.80V
10.9
6.95
Discharge Constant Power (watts at 77° F 25
End Point
Volts/Cell
8
.
7
Terminal F2
90%
Max. discharge current77°F(25 ): 60A(5S)
Nominal voltage
Number of cell
10
1
Capacity after 3 month storage
℃
SPECIFICATION
90
、10.5V) 4.0Ah
3.8Ah
10 hour rate (0.38A、10.5V)
3.5Ah
5 hour rate (0.7A、10.5V)
2.5Ah
1 hour rate (2.5A、9.6V)
Full charged Battery77°F(25℃):35mΩ
102%
104°F(40℃)
100%
77°F(25℃)
85%
32°F(10℃)
65%
5°F(-15℃)
20 hour rate (0.2A
5min
10min 15min 30min 45min
1.60V
26.8
16.7
13.3
8.33
1.65V
25.1
15.7
12.6
7.92
1.70V
23.5
14.7
11.9
1.75V
21.8
13.8
11.2
1.80V
20.2
12.8
10.4
℃)
1h
2h
3h
6.00
4.83
2.99
1.86
1.22
5.72
4.63
2.90
1.82
1.20
7.49
5.44
4.42
2.80
1.77
1.18
7.05
5.14
4.20
2.69
1.71
1.16
6.62
4.85
3.97
2.58
1.66
1.13
5h
(Note)The above characteristics data are average values obtained
Unit:mm
Within three charge/discharge cycles not the minimum values.
Page1 of 2
NP4-12 (12V4.0Ah)
charge characteristic curve
t
n
e
r
r
u
C
e
g
a
t
l
o
V
(%)
(rCA)
(V)
120
0.25
d
e
g
r
a
h
C
e
m
u
l
o
V
100
15.0
0.20
80
13.0
0.10
12.0
0.05
11.0
0
0
volume
Charged
Charge voltage
0.15
20
)
V
(
e
g
a
t
l
o
v
y
r
t
t
a
B
14.0
60
40
Discharge characteristic(25℃)
Constant voltage charging characteristic
(0.25CA,25℃ )
Charging current
0
2
4
6
8
10
12
14
16
18
13.0
12.0
11.0
10.0
12A
9.0
8.0
0
01
2 3 5
20
0.7A 0.38A 0.2A
1.05A
4A 2.5A
8A
10 20 30 60
min
Charging time（ hours)
2 3 5 10 20 30
h
Discharge time
Temperature effects on float life
Cycle service life in relation to depth of discharge
10
120
100
)
s
r
a
e
y
(
e
f
i
L
)
%
(
y
t
i
c
a
p
a
C
2.30V/cell
1
80
60
100%D.O.D
20
0.1
10
20
30
40
50
0
60
200
400
)
V
8
/
V
(
)
V
6
/
V
(
)
l
l
e
c
/
V
(
)
V
4
/
V
(
15.6 10.4
7.8
5.2
2.6
15.0 10.0
7.5
5.0
2.5
14.4
7.2
4.8
2.4
9.6
13.8
9.2
6.9
4.6
2.3
13.2
8.8
6.6
4.4
2.2
1000
1200
1400
1 10
)%
(y
ti
ca
pa
C
CYC
LE
USE
STAN
D BY
USE
1 00
90
80
70
60
40 ℃
2 0℃
30 ℃
50
40
-10
0
10
20
30
40
50
Ambient temperature(℃)
60
0
2
4
6
8
10
12
14
16
18
20
S to ra ge t im e: m on t hs
Temperature effects on capacity
Life characteristics of standby use
120
)%
(y
ti
ca
pa
C
800
Se lf -d is ch ar ge c ha r ac te ri st ic
Relationship between charging voltage and temperature
)
V
2
1
/
V
(
600
Number of cycles(cycles)
Temperature(℃ )
e
g
a
t
l
o
V
g
n
i
g
r
a
h
C
30% Depth of discharge
50%D.O.D
40
120
100
)%
(y
ti
ca
pa
C
80
60
Testing conditions floating voltage:2.27 to 2.30V/cell
40
20
100
60
1
2
Life(year)
3
1. 0C
2. 0C
3. 0C
40
20
0
0
0 .0 5C
0. 1C
0. 2C
80
-20
-10
0
10
20
30
Temperature(℃ )
Page2 of 2
40
50