Estimating how long a charge cycle will take is affected by a number of factors. These include temperature, discharge rate, battery age, and condition.

For example:

A 48V golf cart with a well-maintained battery pack that would be discharged to 1.75Vpc at an approximate temperature of 25°C/77°F would take around 8 - 10 hours to complete a cycle, but as the batteries age we would expect that time to rise 10 - 12 hours. If the batteries are in poor condition that time can be longer.