Industrial 1.6L Engine Electrical 3-31
Charging Time Required
The time required to charge a battery will vary. The time depends on the following factors:
• Size of the battery - A completely discharged heavy–duty battery requires more than twice the recharging
time as a completely discharged light–duty battery.
• Temperature - Colder batteries require more time to recharge.
• Cold batteries accept only very low current at first during charging. The cold battery will
accept a higher charging rate as the battery warms.
• Charger Capacity - A charger with higher amperage charges batteries in less time.
• State–Of–Charge - A completely discharged battery requires more than twice as much charge as a one–half
charged battery.
The electrolyte in a completely discharged battery is nearly pure water, so the electrolyte is a very poor conductor. In
this condition, the battery accepts very low current at first. Later, as the charging current increases the acid content of
the electrolyte, the charging current also increases.
Any battery discharged by parasitic current drain, and then allowed to stand in this condition for a period of time, may
not readily accept a charge. However, recharged long enough, many batteries will return to a usable condition.
Prolonged periods in a discharged state can result in permanent damage to the battery. This damage can accelerate
under changing temperatures. Batteries that are extremely discharged can freeze at temperatures as high as -7°C
(20°F). This results in permanent damage.
Disconnect the negative battery cable of equipment that is not going to be in service within a 30–day period. This will
remove the constant drain on the battery. This can prevent damage to the battery and recharge problems. If this is not
possible, recharge the battery every 30-45 days until the green dot is visible.
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