Most golf cars utilize more than one deep-cycle battery to power a 24V, or 48-volt system. In these instances, connecting the batteries in different ways, either in Parallel or Series, can offer advantages in either the battery pack’s voltage or overall capacity.
CONNECTIONS IN PARALLEL:
Batteries that are connected in Parallel increase the total amp-hour capacity (runtime) of the battery bank while keeping the operating voltage the same. As an example, two 24V 100 amp-hour (Ah) deep-cycle batteries wired in Parallel, produce a 24-volt and 200Ah battery bank.
Best Use:
Applications where a golf car requires a particular voltage but with additional amperage provides longer-lasting power between charges.
CONNECTIONS IN SERIES:
Batteries that are connected in Series increase the total voltage of the battery bank while keeping the amp-hour (Ah) capacity identical to that of a single battery. As an example, a 24V system can use two 12V or four 6V batteries but still maintain the 100 Ah capacity of a single battery.
Best Use:
Voltage spread across multiple batteries reduces current draw (amperage) through wires and can provide greater efficiency over longer distances.
CONNECTIONS IN SERIES/PARALLEL
When banks of batteries are connected both in Series and Parallel, it increases both total voltage and capacity (runtime). As an example, four 12V 100Ah batteries in a 24V system are connected in Series to create two 24V 100Ah battery banks. The two banks are connected in Parallel, to make a 24V 200Ah battery bank. Please note that connecting batteries in series and parallel can easily boost the total power of a battery bank. However, this configuration introduces significant complexity regarding battery charging and consistency. Be sure to consult the battery manufacturer about the resitrictions before setting up these connections.
SAFETY PRECAUTIONS:
Check the Connections: Ensure that the terminal cable bolts and wiring mounts are tight. Battery manufacturers have a recommended torque setting for tightening the bolts holding terminal cables. Check with the battery manufacturer to know what torque settings are correct for your deep-cycle battery.
Batteries Being Connected Should Be Identical. Make sure to connect the same battery chemistries together (Lithium-ion, Flooded Lead-Acid, AGM).
Use Same Size Cables: All connections should utilize the same size battery cables recommended by the battery manufacturer to ensure proper amperage flow.
For more information on deep-cycle batteries, how to properly connect batteries, and diagrams for various battery connections, visit www.usbattery.com.
