Battery Charging Time Required

Battery Charging Time Table:

NOTE:
The time required to charge a battery will vary depending upon the following factors:

FACTORS
1. Size of Battery - A completely discharged large heavy-duty battery requires more than twice the recharging time as a completely discharged small capacity battery.

WARNING: Never exceed 20 amps when charging a cold (-1°c/30°F) battery, personal injury may result.

2. Temperature - A longer time will be needed to charge a battery at -18°C (0°F) than at 27°C (80°F). When a fast charger is connected to a cold battery, current accepted by battery will be very low at first. Then, in time, the battery will accept a higher rate as battery warms.

3. Charger Capacity - A charger that can supply only 5 amperes requires a much longer charging time than a charger that can supply 20 amperes.

4. State Of Charge - A completely discharged battery requires more charging time than a partially charged battery. Electrolyte is nearly pure water in a completely discharged battery. At first the charging current amperage will be low. As acid is forced from the plates, inside the battery, the current amperage will rise. Also, the specific gravity of the electrolyte will rise, bringing the green dot into view.