Page 50
©
2013 Magnum Energy, Inc
.
Appendix B – Battery Information
B-6 Battery Wiring Confi gurations
The battery bank must be wired to match the inverter’s DC input voltage. In addition, the batteries
can be wired to provide additional run time. The various wiring con
fi
gurations:
B-6.1 Series
Wiring
Wiring batteries in series increases the battery bank’s output voltage. A series connection combines
each battery in a string until the total voltage matches the inverter’s DC requirement. Even though
there are multiple batteries, the capacity remains the same. In Figure B-1 below, two 6 VDC/200
AHr batteries are combined into a single string resulting in a 12 VDC, 200 AHr bank.
Figure B-3, Series-Parallel Battery Wiring
B-6.3 Series-Parallel
Wiring
A series/parallel con
fi
guration increases both voltage (to match the inverter’s DC requirements) and
AHr capacity (to increase run-time for operating the loads) using smaller, lower-voltage batteries.
In Figure B-3 below, four 6 VDC/200 AHr batteries are combined into two strings resulting in a
12 VDC, 400 AHr battery bank.
Series/Parallel Battery Wiring
combines battery voltage and capacity:
200 AHr @ 6 VDC
+
200 AHr @ 6 VDC
200 AHr @ 6 VDC
+
200 AHr @ 6 VDC
= 400 AHr @ 12 VDC
add voltage
in series
6 VDC
(200 AHr)
6 VDC
(200 AHr)
6 VDC
(200 AHr)
6 VDC
(200 AHr)
12 VDC @
400 AHr
= 200 AHr @ 12 VDC
+
= 200 AHr @ 12 VDC
add capacity
in parallel
add voltage and
capacity together
B-6.2 Parallel
Wiring
Wiring batteries in parallel increases the battery bank’s amp-hour capacity, which allows the AC
loads to operate for a longer time. A parallel connection combines the number of batteries in the
string to increase overall battery capacity; however, the voltage remains the same. In Figure B-2
below, two 12 VDC/100 AHr batteries are combined into a single 12 VDC, 200 AHr battery bank.
Figure B-2, Parallel Battery Wiring
12 VDC
(100 AHr)
12 VDC @
200 AHr
100 AHr @ 12 VDC
+
100 AHr @ 12 VDC
=
200 AHr @ 12 VDC
12 VDC
(100 AHr)
Parallel Battery Wiring
combines battery capacity:
200 AHr @ 6 VDC
+
200 AHr @ 6 VDC
=
200 AHr @ 12 VDC
6 VDC
(200 AHr)
6 VDC
(200 AHr)
12 VDC @
200 AHr
Series Battery Wiring
combines battery voltage:
Figure B-1, Series Battery Wiring
