Samlex America SRV-150-30A - Manuel (Page 17)

17
9
TYPICAL BATTERY CONNECTIONS
Series Connection of Batteries
Solar Charge Controller
SCC-30AB (rear view)
Solar Charge Controller
SCC-30AB (rear view)
Solar Charge Controller
SCC-30AB (rear view)
PV +
PV -
BAT +
BAT -
6V Battery 6V Battery
PV +
PV -
BAT +
BAT -
12V Battery 12V Battery 12V Battery 12V Battery
PV +
PV -
BAT +
BAT -
6V Battery 6V Battery 6V Battery 6V Battery
String 1 String 2
Battery 1 Battery 3 Battery 2 Battery 4
Battery 1 Battery 3 Battery 2
Battery 1 Battery 2
Battery 4
Cable “A”
Cable “B”
Cable “A”
Cable “B”
Cable “A”
Cable “B”
Fig. 9.1: Series Connection
When two or more batteries are connected in series, their voltages add up but their Ah capacity remains the
same. Fig. 9.1 above shows 2 pieces of 6V, 200 Ah batteries connected in series to form a battery bank of 12V
with a capacity of 200 Ah. The Positive terminal of Battery 1 becomes the Positive terminal of the 12V bank.
The Negative terminal of Battery 1 is connected to the Positive terminal of Battery 2. The Negative terminal of
Battery 2 becomes the Negative terminal of the 12V battery bank.
Parallel Connection of Batteries Solar Charge Controller
SCC-30AB (rear view)
Solar Charge Controller
SCC-30AB (rear view)
Solar Charge Controller
SCC-30AB (rear view)
PV +
PV -
BAT +
BAT -
6V Battery 6V Battery
PV +
PV -
BAT +
BAT -
12V Battery 12V Battery 12V Battery 12V Battery
PV +
PV -
BAT +
BAT -
6V Battery 6V Battery 6V Battery 6V Battery
String 1 String 2
Battery 1 Battery 3 Battery 2 Battery 4
Battery 1 Battery 3 Battery 2
Battery 1 Battery 2
Battery 4
Cable “A”
Cable “B”
Cable “A”
Cable “B”
Cable “A”
Cable “B”
Fig. 9.2: Parallel Connection
When two or more batteries are connected in parallel, their voltage remains the same but their Ah capacities
add up. Fig. 9.2 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.