Samlexpower samlexpower SCC-30AB, Owner'S Manual

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12 | SAMLEX AMERICA INC. SAMLEX AMERICA INC. | 13
SECTION 3 | Description & Principle of Operation
Series and Parallel Connection of Batteries
Series Connection
Solar Charge Controller
SCC30-AB (rear view)
PV +
PV -
BAT +
BAT -
6V Battery 6V Battery
Battery 4 Battery 3
6V Battery
Battery 2
6V Battery
Battery 1
6V Battery
Cable “A”
Cable “B”
Fig. 3.2. Series Connection
When two or more batteries are connected in series, their voltages add up, but their Ah
capacity remains the same. Fig. 3.2 above 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.
Parallel Connection
Solar Charge Controller
SCC30-AB (rear view)
PV +
PV -
BAT +
BAT -
12V Battery 12V Battery 12V Battery 12V Battery
Battery 1 Battery 3 Battery 2 Battery 4
Cable “A”
Cable “B”
Fig. 3.3. Parallel Connection
When two or more batteries are connected in parallel, their voltage remains the same
but their Ah capacities add up. Fig. 3.3 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.