Page 1
Specification
Nominal Voltage
Nominal Capacity(20HR)
Dimensions
Approx Weight
Terminal
Container Material
Rated Capacity
Max. Discharge Current
Internal Resistance
Operating Temp.Range
Nominal Operating Temp. Range
Cycle Use
Standby Use
Capacity affected by
Temperature
Self Discharge
US
ERIES-General Purpose S
12V
18.0AH
Length
Width
Container Height
Total Height (with Terminal)
181.5±2mm (7.14 inches)
77±1mm (3.03 inches)
167.5±2mm (6.59 inches)
167.5±2mm (6.59 inches)
Approx 5.4kg (11.9lbs)
T12
ABS
18.0 AH/0.90A
16.7 AH/1.67A
15.1 AH/3.03A
13.5 AH/4.49A
11.1 AH/11.1A
(20hr ,1.80V/cell,25 C/77 F)
(10hr,1.80V/cell,25 C/77 F)
(5hr,1.75V/cell,25 C/77 F)
(3hr,1.75V/cell,25 C/77 F)
(1hr,1.60V/cell,25 C/77 F)
0 0
0 0
0 0
0 0
0 0
270A (5s)
Approx 16mΩ
Discharge : -15～50 C (5～122 F)
Charge : 0～40 C (32～104 F)
Storage : -15～40 C (5～104 F)
0 0
25±3 C (77±5 F )
0 0
0 0
0 0
Initial Charging Current less than 5.4A.Voltage
14.4V~15.0V at 25 C(77 F)Temp. Coefficient -30mV/ C
0 0 0
No limit on Initial Charging Current Voltage
13.5V~13.8V at 25 C(77 F)Temp. Coefficient -20mV/ C
o o
40 C (104 F)
o o
25 C ( 77 F)
o o
0 C ( 32 F)
US series batteries may be stored for up to 6 months
0 0
at 25 C(77 F) and then a freshening charge is required.
0 0 0
103%
100%
86%
For higher temperatures the time interval will be shorter.
12-18 (12V18AH)
US
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Applications
All purpose
Uninterruptable Power Supply (UPS)
Electric Power System (EPS)
Emergency backup power supply
Emergency light
Railway signal
Aircraft signal
Alarm and security system
Electronic apparatus and equipment
Communication power supply
DC power supply
Auto control system
VdS
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Germany
F.V/Ti me
1.85 V/c ell
1.80 V/c ell
1.75 V/c ell
1.70 V/c ell
1.65 V/c ell
1.60 V/c ell
F.V/Ti me
1.85 V/c ell
1.80 V/c ell
1.75 V/c ell
1.70 V/c ell
1.65 V/c ell
1.60 V/c ell
0 0
5h
6h
8h
10h
20h
5min
10mi n
Constant Current Discharge (Amperes) at 25 C (77 F )
15mi n 30mi n
20mi n
45mi n
1h 2h
3h
4h
33.9 25.6 22.7 19.9 15.3 11.4 9.11 5.51 4.13 3.35 2.84 2.47 1.96 1.63 0.884
40.8 30.2 25.9 22.1 16.7 12.2 9.79 5.85 4.34 3.51 2.94 2.55 2.02 1.67 0.900
45.8 33.0 27.8 23.4 17.4 12.8 10.2 6.07 4.49 3.60 3.03 2.62 2.06 1.70 0.918
49.9 35.4 29.7 24.7 18.1 13.2 10.6 6.27 4.63 3.69 3.09 2.67 2.09 1.72 0.929
53.8 37.7 31.1 25.8 18.9 13.8 10.9 6.44 4.73 3.77 3.14 2.71 2.12 1.74 0.938
57.9 39.6 31.9 26.4 19.3 14.0 11.1 6.59 4.82 3.84 3.20 2.74 2.15 1.76 0.945
5min 10min 1 5mi n
Constant Power Discharge (Watts/cell) at 25 C (77 F )
20mi n
30mi n
45mi n
1h 2h
3h
4h
5h
0 0
6h
8h
10h
20h
64.0 48.8 43.6 38.5 29.8 22.3 17.9 10.9 8.21 6.68 5.68 4.95 3.95 3.29 1.79
76.3 57.2 49.5 42.7 32.4 23.9 19.2 11.5 8.59 6.98 5.86 5.09 4.04 3.36 1.81
84.8 62.0 52.8 44.8 33.6 24.9 20.0 11.9 8.87 7.14 6.02 5.21 4.11 3.39 1.82
91.1 65.6 55.7 46.8 34.7 25.6 20.6 12.2 9.06 7.25 6.08 5.27 4.15 3.42 1.83
96.6 68.8 57.5 48.4 35.8 26.3 21.0 12.5 9.19 7.35 6.15 5.32 4.18 3.43 1.84
101.5 70.8 58.0 48.7 36.0 26.5 21.3 12.7 9.31 7.45 6.22 5.33 4.21 3.45 1.85
Speci fi ca ti on s su bj ec t to c ha ng e wi th ou t no ti ce .
1
Page 2
Dimensions
T12Terminal
Unit: mm [inches]
(0.472)
(0.118)
Dischar ge Characteri stics
12V
Batt ery
（V）
13.0
12.0
11.0
10.0
9.0
Terminal Voltage(V)
8.0
Tempera tu re :2 5 C(77 F)
0.4C
0.628C
1C
3C
2C
6
2
1
8
4
10
Min
40
20
2
60
0.207C
4
6
H
0 0
0.093C
10
8
0.05C
20
Discharge Time
Temperature Ef fects in Relation to Battery Capacity
120
100
80
60
40
Cap acity（%）
20
0
-10
-20
0
Temperature( C)
A
C
5
0
0.
A
1C
0.
A
C
2
.
0
A
C
0
.
1
A
C
.0
2
20
10
0
A
C
0
.
3
30
50
40
Float Cha rging Charact eristics
Charge
Volume
%
120
110
100
90
80
70
60
50
40
30
20
10
0
0.25
0.20
0.15
0.10
0.05
Current
(XCA)
0
Voltage
(V)
15.0
14.0
13.0
12.0
11.0
0 8
32 36
0
40
0.10CA-2.25V/cell temperature25 C
Charged Volume
Charge Voltage
(Constant 2.25v/cell)
After 50% Discharge
After 100% Discharge
Charging Current
16
20
12
4
28
24
Charging
Charging
Charging Time(hours)
Effect of Temper ature on Long Term Float L ife
10
8
6
5
4
3
2
1
Life expectancy(year)
0.5
20
68
30
86
Battery temperature
Charging voltage :
40
104
2.25V/cell
50
122
0
C
O
F
Cycle Lif e in Relation to De pth of Discharg e
Testi ng cond ition
Dis charg ing:c urren t 0.17C ( FV 1.7V /cell );
Cha rging :curr ent 0.2 5C max, v oltag e 2.45V /cell ;
Cha rging v olume :125% o f disch arged c apaci ty.
120
Ambient teperature:25±5 C
100
80
60
40
Cap city( %)
100 %
DOD
50%
DOD
20
0
0 200 4 00 600 80 0 1000 12 00
Num ber of Cy cles
0
30%
Ambient Termperature:
25 C (77 F)
DOD
o o
Self Disc harge Charact eristics
100
80
60
40
20
Remaining Capacity(%)
0
2
0
40 C
6
4
30 C
8
Storage Time(Months)
No supplementary charge required
A
(Carry out supplementary charge before use if 100% capacity is required.)
Supplementary charge required before use.Optional charging way as below:
1.Charged for above 3 days at limted current 0.25CA and constant volatge 2.25V/cell.
B
2.Charged for above 20hours at limted current 0.25CA and constant volatge 2.45V/cell.
3.Charged for 8~10hours at limted current 0.05CA .
Supplementary charge may often fail to recover the capacity.
C
The battery should never be left standing till this is reached.
2
2
0
10 C
25 C
0
A
0
B
C
12
10
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