Parallel Wiring; Series-Parallel Wiring; Figure 15, Parallel Battery Wiring; Figure 16, Series-Parallel Battery Wiring - Magnum Energy MM Series Owner's Manual

Appendix B - Battery Information

Parallel Wiring

Wiring the batteries in parallel increases the total run time the batter-
ies 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 ex-
ample below (Figure 15), four 12 VDC/100 AHr batteries are combined
into a single 12 VDC/400 AHr battery bank.

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 ex-
ample below (Figure 16), four 6 VDC/200 AHr batteries are combined
into two strings resulting in a 12 VDC/400 AHr battery bank.
String 1
String 2
12 volt battery bank (total capacity = 400 AHrs)

Figure 16, Series-Parallel Battery Wiring

34
12 volts
(100 AHrs )
12 volts
(100 AHrs )
12 volts
(100 AHrs )
12 volts
(100 AHrs )
12 volt battery bank (total capacity = 400 AHrs)

Figure 15, Parallel Battery Wiring

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