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OPEN CIRCUIT VOLTAGE VERSUS REMAINING CAPACITY
Open circuit voltage
Open klemspanning
Leerlaufspanning
Tension en l'absence de charge
Tensión sin carga
Tensione a circuito aperto
Approximate state of charge (%)
Benadering van de ladingstoestand (%)
Annähernde Ladezustand (%)
Etat de charge approximatif (%)
Estado de carga aproximado (%)
Carica approssimativa degli accumulatori (%)
Open circuit voltage is measured after the battery was disconnected from any load or power source for at least 12hrs.
Model:
Continual discharge:
Discharge time t ≤ 2min:
Discharge time t ≤ 10sec:
CONSTANT CURRENT DISCHARGE (AMPS @25ºC/77ºF)
Time (minutes)
10
Final voltage (V)
7.8
AGM-55Ah
132.5 99.7
AGM-70Ah
162.5 123.5 97.5
AGM-90Ah
213.0 162.0 127.5 98.0
AGM-130Ah
300.0 228.0 180.0 137.5 95.0
AGM-160Ah
390.0 318.6 245.5 179.0 122.4 92.0
AGM-225Ah
AGM-270Ah
CONSTANT POWER DISCHARGE (WATT /CELL @25ºC/77ºF )
Time (minutes)
10
Final voltage (V)
7.8
AGM-55Ah
225.4 174.5 147.4 100.5 83.2
AGM-70Ah
305.5 234.0 191.1 141.1 103.4 77.2
AGM-90Ah
400.0 306.0 250.0 184.5 135.2 101.6 59.0
AGM-130Ah
564.0 432.0 353.0 259.5 188.5 139.4 80.5
AGM-160Ah
730.5 600.6 471.5 337.5 243.3 182.0 106.8 80.8
AGM-225Ah
AGM-270Ah
The rate of self discharge is approximately 3% per month
@ 20ºC. Therefore batteries need supplementary charge
according to the table below to keep its capacity.
Storage temperature
< 20ºC / < 68 ºC
20 to 30 ºC / 68 to 86 ºF
30 to 40 ºC / 86 to 104 ºF
40 to 50 ºC / 104 to 122 ºF
MAXIMUM DISCHARGE CURRENT
AGM
55Ah
50A
150A
300A
15
20
30
45
7.8
7.8
9.6
9.6
82.2
55.0
43.7
78.8
52.0
68.0
315.0 241.5 168.0 126.0 73.5
318.4 222.9 175.8 95.5
15
20
30
45
7.8
7.8
9.6
9.6
588.0 434.0 318.0 237.7 136.5 101.6 80.1
600.8 443.0 348.0 189.9 142.1 109.2 91.4
BATTERY STORAGE
Charging interval
Every 9 months
Every 6 months
Every 3 months
Every 1.5 months
11.64V
11.88V
12.09V
0%
20%
AGM
AGM
AGM
70Ah
90Ah
130Ah
65A
85A
120A
195A
255A
360A
410A
510A
720A
60
120
180
240
10.0
10.2
10.5
10.5
31.2
18.0
13.4
10.7
39.0
22.8
16.9
13.0
51.0
30.0
21.8
17.1
70.0
40.3
30.8
19.2
54.2
40.6
30.8
54.6
42.0
71.3
54.8
60
120
180
240
10.0
10.2
10.5
10.5
59.0
34.3
25.7
20.7
45.2
33.7
25.9
42.5
34.0
61.5
46.3
61.2
100%
75%
50%
25%
0%
0
3
12.30V
12.51V
40%
60%
80%
AGM
AGM
160Ah
225Ah
150A
210A
450A
630A
900A
1260A
300
360
480
10.5
10.5
10.8
8.8
7.8
6.1
11.2
9.9
7.7
14.5
12.9
10.1
20.4
18.1
14.3
26.8
23.5
18.2
36.1
31.9
25.0
45.8
39.2
30.6
300
360
480
10.5
10.5
10.8
17.1
15.0
12.9
22.3
19.8
15.5
29.0
25.8
20.2
40.7
36.1
28.6
53.2
46.8
36.4
69.9
62.0
48.0
78.5
60.9
40ºC (104ºF)
30ºC (104ºF)
6
9
12
Storage time (months)
12.72V
100%
AGM
270Ah
255A
765A
1530A
600
1200
10.8
10.8
5.1
2.8
6.5
3.5
8.5
4.8
12.0
6.4
15.0
8.0
21.0
11.3
25.5
13.5
600
1200
10.8
10.8
10.2
5.5
13.0
7.0
17.0
9.0
24.0
12.8
29.9
16.0
42.0
21.4
50.9
27.0
0ºC (32ºF)
10ºC (50ºF)
20ºC (68ºF)
15
18
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