Figure B-2, Parallel Battery Wiring; Figure B-3, Series-Parallel Battery Wiring - Sensata MAGNUM ENERGY MM Series Owner's Manual

Appendix B – Battery Information
• Parallel Wiring
Wiring the batteries in parallel increases the total run time the batteries
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 B-2), four 12 VDC/100 AHr batteries are combined into a single
12 VDC/400 AHr battery bank.
(100 AHrs)
(100 AHrs)
(100 AHrs)
(100 AHrs)
12 volt battery bank (total capacity = 400 AHrs)

Figure B-2, 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 B-3), four 6 VDC/200 AHr batteries are combined
into two strings resulting in a 12 VDC/400 AHr battery bank.
6 volts
String
(200 AHrs)
1
6 volts
String
(200 AHrs)
2
12 volt battery bank (total capacity = 400 AHrs)

Figure B-3, Series-Parallel Battery Wiring

31
12 volts
12 volts
12 volts
12 volts
6 volts
(200 AHrs)
6 volts
(200 AHrs)
overcurrent
protection
to
12 VDC
inverter
overcurrent
protection
12 VDC
inverter
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