Question

given reason for drop in voltages of a battery.

Answer 1

When a battery is charged this chemical process cannot take place. However, when the battery's voltagefalls below 12.4V this process begins. The process causes sulphur crystals to form on the lead plates inside thebattery, which in turn increases thebattery's electrical resistance

Answer 2

Answer:

An excessive resistance of your high amperage circuit is an overlooked problem that can cause your volts to drop in your batteries. Check to see if the cables are corroded, damaged, or loose. Resistance is usually caused by battery terminals and cables that have not been properly cleaned.

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