38 | SAMLEX AMERICA INC.
3.4 INSTALLING BATTERIES - SERIES AND PARALLEL CONNECTION
Batteries are normally available in voltages of 2V, 6V and 12V and with different Ah capacities. A number of individual
batteries can be connected in series and in parallel to form a bank of batteries with the desired increased voltage and
capacity.
3.4.1 Series Connection
6V 6V
Battery 4 Battery 3
6V
Battery 2
6V
Battery 1
24V Inverter
or 24V Charger
Cable “A”
Cable “B”
Fig 3.5 Series Connection
When two or more batteries are connected in series, their voltages add up but their Ah capacity remains the same.
Fig. 3.5 shows 4 pieces of 6V, 200 Ah batteries connected in series to form a battery bank of 24V with a capacity
of 200 Ah. The Positive terminal of battery 4 becomes the Positive terminal of the 24V bank. The Negative terminal
of battery 4 is connected to the Positive terminal of battery 3. The Negative terminal of battery 3 is connected
to the Positive terminal of battery 2. The Negative terminal of battery 2 is connected to the Positive terminal of
battery 1. The Negative terminal of battery 1 becomes the Negative terminal of the 24V battery bank.
3.4.2 Parallel Connection
12V 12V 12V 12V
Battery 1 Battery 3Battery 2 Battery 4
Cable “A”
Cable “B”
12V Inverter
or 12V Charger
Fig 3.6 Parallel Connection
When two or more batteries are connected in parallel, their voltage remains the same but their Ah capacities add
up. Fig. 3.6 above shows 4 pieces of 12V, 100 Ah batteries connected in parallel to form a battery bank of 12V with
a capacity of 400 Ah. The four Positive terminals of batteries 1 to 4 are paralleled (connected together) and this
common Positive connection becomes the Positive terminal of the 12V bank. Similarly, the four Negative terminals
of batteries 1 to 4 are paralleled (connected together) and this common Negative connection becomes the Negative
terminal of the 12V battery bank.
SECTION 3 | Installation
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