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9
5 h rating
20 h rating,
1.26
5
log
15
log
5
log
20
log
exponent,
Peukert
n
When no ratings are given at all, you can measure your battery using a
„constant load bank‟. In this way a second rating can be obtained,
together with the 20 h rating which represents the rated battery capacity
in most cases. This second rating can be determined by discharging a
fully charged battery with a constant current; until the battery reaches
1.75 V per cell (which is 10.5 V for a 12 V battery or 21 V for a 24 V
battery). A calculation example is shown below:
A 200 Ah battery is discharged with a constant current of 20 A and after
8.5 hours 1.75 V/cell is reached.
So,
20 h rating,
1.23
10
log
20
log
5
.
8
log
20
log
exponent,
Peukert
n
A Peukert calculator is available at
4.1.3
Synchronising the VBC-HV
For a reliable readout of the state of charge of your battery, the battery
monitor has to be synchronised regularly with the battery and charger.
A
h
Ah
I
h
t
Ah
C
h r
15
5
75
5
75
1
1
5
A
h
Ah
I
h
Ah
C
h r
5
20
100
20
t
capacity)
(rated
100
2
2
2 0
A
I
h
t
20
5
.
8
1
1
A
h
Ah
I
h
t
Ah
C
h
10
20
200
20
200
2
2
2 0
Содержание VBC-HV
Страница 1: ...Manual EN VE Net Battery Controller 70 385V model VBC HV...
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