BC28-12 Datasheet, PDF (2/2 Pages) B. B. Battery Co., Ltd. – Absorbent Glass mat technology for efficient gas recombinatino

BC28-12 (BC28-12FR) discharge characteristics (25^oC/77^oF)
Battery Charging Characteristics
13.0
12.0
11.0
10.0
9.0
0.17CA 0.095CA 0.05CA
0.25CA
0.6CA
8.0
7.0
1
2.5CA 2CA 1CA
23 5
10 20 30 60 2 3 5
10 20 30
Min
Hr
Discharge time
(Typical examp le of t he charge characteristics for the standby us e)
0.21 15.0
140
0.18 14.0
0.15 13.0
0.12 12.0
0.09 11.0
0.06 10.0
Charge voltage
120
Charge ^volume
100
1 Discharge
80
100%(0.05CA x 20h)
50%(0.05CA x 10h)
2 Constant voltage charging
60
Charge voltage:2.275V/cell
Charge current:0.1CA
3 Temperature:25℃(77℉)
40
0.03
20
Charge current
0
0
0
0
5
10
15
20
25
Charge time (hr)
Charging Procedure
Application
Charging
method
Charging time
Charging ^Temperature Max. charging
Voltage ^compensation current
O
0.1CA, 25 C
(h)
at 25^OC ^{coefficient of}
(CA)
(V/cell) ^{charging voltage}
(mV/ ^OC/cell)
100%
50%
discharge discharge
Te mp
(^OC)
Constant
For standby _{voltage & 2.25~2.30}
-3
power Source _Constant
current
charging
For
(with current
cycle service _restriction) 2.40~2.50
-4
0.3
24
20
0~ 40
(32~ 10 4^OF)
0.3
16
10
Effect Of Temperature On Long Term Float Life
10
8
6
Charging voltage :
5
2.275V/cell
4
3
2
1
0.5
20
30
40
50°C
68
86
104
122°F
Battery temperature
Constant power discharge characteristics at 25 ^oC/77 ^oF
Discharge
F.V.
Time
(V/cell)
1.80V
5 Min
703.7
10 Min
573.8
15 Min
468.5
30 Min
317.3
1 Hr
199.7
1.75V
790.5
621.5
489.9
329.6
205.7
1.70V
865.3
642.9
504.7
337.1
209.4
1.65V
904.3
659.3
516.6
341.8
211.9
1.60V
934.2
672.6
526.7
345.3
214.1
Unit: W
3 Hr
81.60
83.27
84.00
84.53
85.13
Constant current discharge characteristics at 25 ^oC/77 ^oF Unit: A
Discharge
F.V.
Time
(V/cell)
1.80V
5 Min
64.1
10 Min
51.7
15 Min
41.9
30 Min
27.1
1 Hr
16.8
3 Hr
6.80
1.75V
73.3
56.1
43.8
28.2
17.3
6.93
1.70V
80.2
58.1
45.1
28.9
17.6
7.00
1.65V
85.4
60.6
46.2
29.3
17.8
7.07
1.60V
89.9
62.9
47.1
29.5
18.0
7.07
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5 Hr
56.27
57.13
57.40
57.60
57.80
10 Hr
31.47
31.93
32.07
32.20
32.20
20 Hr
16.53
16.80
16.87
16.93
16.93
5 Hr
4.67
4.73
4.80
4.80
4.80
10 Hr
2.60
2.67
2.67
2.67
2.67
20 Hr
1.33
1.40
1.40
1.40
1.40
A/1 REV. Dec. 2010
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