Parallel Wiring; Series-Parallel Wiring; Figure 19, Parallel Battery Wiring; Figure 20, Series-Parallel Battery Wiring - Magnum Energy MMS1012 Owner's Manual

Appendix B - Battery Information

Parallel Wiring

Wiring the batteries in parallel increases the total run time the bat-
teries can operate the AC loads. A parallel connection combines
overall battery capacity by the number of batteries in the string. Even
though there are multiple batteries, the voltage remains the same.
In the example below (Figure 19), four 12 VDC/100 AHr batteries
are combined into a single 12 VDC/400 AHr battery bank.
12 volt battery bank (total capacity = 400 AHrs)

Figure 19, Parallel Battery Wiring

Series-Parallel Wiring

A series-parallel confi guration increases both voltage (to match the
inverter's DC requirements) and capacity (to increase run time for
operating the loads) using smaller, lower-voltage batteries. In the
example below (Figure 20), four 6 VDC/200 AHr batteries are com-
bined into two strings resulting in a 12 VDC/400 AHr battery bank.
(200 AHrs )
String 1
String 2
(200 AHrs )
12 volt battery bank (total capacity = 400 AHrs)

Figure 20, Series-Parallel Battery Wiring

42
12 volts
(100 AHrs )
12 volts
(100 AHrs )
12 volts
(100 AHrs )
12 volts
(100 AHrs )
6 volts 6 volts
(200 AHrs )
6 volts 6 volts
(200 AHrs )
overcurrent
protection
To
12 VDC
Inverter
overcurrent
protection
To
12 VDC
Inverter
© 2010 Magnum Energy, Inc.