24 | SAMLEX AMERICA INC.
Typical 12V/24V/48V Flooded Lead-Acid Battery Chart - 80˚F / 26.7˚C
Battery Pack/ Bank V
oltage in VDC
Battery State of Charge in Percent (%)
0 10 20 30 40 50 60 70 80 90 100 110 120 130
16.5
16.0
15.5
15.0
14.5
14.0
13.5
13.0
12.5
12.0
11.5
11.0
10.5
10.0
9.5
9.0
C/5
C/40
C/20
C/10
DISCHARGE
CHARGE
C/20
C/3
C/5
C/10
C/100
33.0
32.0
31.0
30.0
29.0
28.0
27.0
26.0
25.0
24.0
23.0
22.0
21.0
20.0
19.0
18.0
24V 12V
66.0
64.0
62.0
60.0
58.0
56.0
54.0
52.0
50.0
48.0
46.0
44.0
42.0
40.0
38.0
36.0
48V
Fig 1.4.1 Charging / Discharging Curves for Typical 12V/24V/48V Flooded Lead Acid Battery
1.4.12 REDUCTION IN USABLE CAPACITY AT HIGHER DISCHARGE RATES – TYPICAL IN INVERTER
APPLICATION
As stated earlier, the Ah capacity of automotive battery is normally applicable at a C-rate of C/20 (or, 0.05C). As the
discharge rate is increased as in cases where the inverters are driving higher capacity loads, the usable Ah capacity
reduces due to “Peukert Effect”. This relationship is not linear but is more or less according to the Table 1.4.3.
TABLE 1.4.3 BATTERY CAPACITY VERSUS RATE OF DISCHARGE – C-rate
C-rate Discharge Current
Usable Capacity (%)
C/20 or, 0.05C
100%
C/10 or, 0.10C
87%
C/8 or, 0.125C
83%
C/6 or, 0.17C
75%
C/5 or, 0.20C
70%
C/3 or, 0.34C
60%
C/2 or, 0.50C
50%
1C
40%
SECTION 1.4 |
General Information
–
Battery Related
Содержание Evolution EVO-4248SP
Страница 115: ...SAMLEX AMERICA INC 115 NOTES...