With the 6-volt and 8-volt systems, a day’s worth of golf car use discharges the battery pack to a lesser extent. Theoretically, a battery that is routinely discharged to 30 percent DOD will last about 2.2 times as long as a battery that is discharged to 60 percent. The lower the depth of discharge in lead acid batteries, the greater number of cycles they will deliver. A battery’s DOD is defined as the capacity taken out of the batteries as a percentage of its overall capacity before recharging. However, one thing to keep in mind is the effect of depth of discharge (DOD). With all three configurations, the batteries have more than enough capacity to get through two rounds. A typical round of golf will require about 40 minutes of run time while discharged at 56 amps. As the table shows, the 6-volt system has a higher capacity than the 8-volt and 12-volt systems. The example below shows a comparison between three different packs utilizing three main battery voltages. However, the pack configuration should be based on a few more factors. Purchasing fewer batteries with a higher voltage is appealing because it reduces your upfront cost. For example, a typical 48-volt golf car may use eight 6-volt batteries, six 8-volt batteries, or four 12-volt batteries.
With many golf cars requiring 48-volt battery packs, one of the most common money-saving assumptions is that purchasing fewer batteries with higher voltages will be a less expensive alternative. When it comes time to purchase a new set of deep-cycle, flooded lead-acid batteries, golf car fleet managers look for ways to save money.
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