Magnum Energy MM612 Inverter - Manual (Page 40)

©
2010 Magnum Energy, Inc.
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.
Figure 15, Parallel Battery Wiring
Figure 16, Series-Parallel Battery Wiring
34
12 volt battery bank (total capacity = 400 AHrs)
overcurrent
protection
12 volts
(100 AHrs )
12 volts
(100 AHrs )
12 volts
(100 AHrs )
12 volts
(100 AHrs )
To
12 VDC
Inverter
overcurrent
protection
String 2
String 1
12 volt battery bank (total capacity = 400 AHrs)
To
12 VDC
Inverter
6 volts
(200 AHrs)
6 volts
(200 AHrs)
6 volts
(200 AHrs)
6 volts
(200 AHrs)