Charging Time Required

The time required to charge a battery will vary depending upon the following factors:
1. The size of the battery
A completely discharged, heavy-duty battery requires more than twice as much recharging time as a completely discharged, light duty battery.
2. The temperature
More time is required in order to recharge a cold battery. When a fast charger is connected to a cold battery, the current accepted by the battery is very low at first. Then, as the battery warms, the battery accepts a higher rate of current.
3. The charging capacity
Higher amperage chargers require less time to charge a battery.
4. The stat-of-charge
A completely discharged battery requires more than twice as much charge time as a halt charged battery. Because the electrolyte is nearly pure water and a poor conductor in a completely discharged battery, the battery accepts very low current at first. Later, as the charging current causes the electrolyte acid content to increase, the charging current also increases.