Type
Discharge current
Rated capacity and related discharge time
Discharge time
Discharge current
Effective capacity 1.83 V / cell (11 V)
Discharge time
A (rated)
hours
A (C / 5)
Ah
%
hours
Start
5
100 Ah / 20 h
20
Spiral-cell
2.8
56 Ah / 20 h
20
11.2
52
93
4.6
Semi-traction
10
200 Ah / 20 h
20
40
150
75
3.75
VRLA AGM battery Traction (tubular-plate)
11.5
230 Ah / 20 h
20
46
198
86
4.3
200
1000 Ah / 5 h
5
200
1000
100
5
VRLA-gel Sonnenschein Dryfit A200 VRLA-gel Sonnenschein Dryfit A600
10
200 Ah / 20 h
20
40
158
79
4
150
1500 Ah / 10 h
10
300
900
60
3
Type
Discharge current
Effective capacity 1.83 V / cell (11 V)
Discharge time
Discharge current
Effective capacity 1.75 V / cell (10.5 V)
Discharge time
A (C / 2)
Ah
%
Minutes
A (C / 1)
Ah
%
Minutes
Start
Spiral-cell
28
43
77
92
56
42
75
45
Semi-traction
100
110
55
66
200
90
45
27
VRLA AGM battery Traction (tubular-plate)
115
157
68
82
230
142
62
37
500
700
70
80
1000
400
40
24
VRLA-gel Sonnenschein Dryfit A200 VRLA-gel Sonnenschein Dryfit A600
100
120
60
72
200
100
50
30
750
375
25
15
1500
0*
0
0*
* With a discharge current of 1500 A (C / 1) the voltage of an A600 battery drops almost immediately to 1.65 V / cell (i.e. 9.9 V and 19.8 V for a 12 V respectively 24 V system).
Discharge current is often expressed as a proportion of the rated capacity. For example for a 200 Ah battery C / 5 means a discharge current of 40 A (= 200 Ah / 5).
2.5.4. Capacity and temperature
The effective capacity of a battery varies in reverse proportion to temperature:
- 10°C
10°C 92 %
15°C 95 %
20°C
25°C
30°C
80 %
100 %
103 % 105 %
16
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