| Connecting batteries in series does not increase the capacity of the batteries; it simply
increases the overall voltage to meet your system requirements. Once your voltage
requirements are met, if space allows you can double the batteries in a parallel connection-
thereby doubling your battery capacity. |
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Series Connect |
To increase voltage, connect batteries in series. This will not increase the system capacity.
Example :
Two T-105, 6V Batteries rated at 225AH Connected in Series
System Voltage: 6V + 6V = 12V
System Capacity = 225AH |
To increase voltage,
connect batteries in series. |
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Parallel Connect |
To increase capacity, connect batteries in parallel. This will not increase the system voltage.
Example :
Two T-105, 6V Batteries rated at 225AH Connected in Parallel
System Voltage: 6V
System Capacity = 225AH + 225AH = 450AH |

To increase amp-hour capacity,
connect batteries in parallel. |
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Series/Parallel Connect |
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To increase both voltage and capacity, connect additional batteries in series and parallel. Example :
Four T-105, 6V Batteries rated at 225AH Connected in Series/Parallel
System Voltage: 6V + 6V = 12V
System Capacity = 225AH + 225AH = 450AH |

To increase both voltage and
amp-hour capacity, connect
batteries in series/parallel. |