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Parallel Connection
Batteries are connected in parallel when all the positive terminals of a group of batteries are
connected and then, separately, all the negative terminals are connected. In a parallel configuration,
the battery bank have the same voltage as a single battery, but an amp/hour rating equal to the sum
of the individual batteries. This is usually only done with 12-volt battery-inverter systems.
Series Connection
When batteries are connected with the positive terminal of one to the negative terminal of the next,
they are connected in series. In a series configuration, the battery bank has the same amp/hour
rating of a single battery, but an overall voltage equal to the sum of the individual batteries.
12V 12V 12V
12V
INVERTER
+
_
TOTAL BATTERY
BANK CAPACITY:
400 AMP-HOURS
@ 12 VDC
EACH BATTERY
CAPACITY:
100 AMP-HOURS
@ 12 VDC
12V
6V
6V
6V 6V
24V INVERTER
_
TOTAL BATTERY
BANK CAPACITY:
200 AMP-HOURS
@ 24 VDC
EACH BATTERY
CAPACITY:
200 AMP-HOURS
@ 6 VDC
+