The battery voltage decreases during discharge.

• Battery voltage decreases as the battery discharges.

• The rate of voltage decrease depends on the battery's capacity and load.

• For example, a fully charged ...read more

Battery voltage is 12v and duration time drop load heavy and continue use low battery

In discharge time battery voltage is 12

the voltage of each cell is about 2.5 to 2.7 volts.

12 v batterys discharged below 12.4 volts, sulfation begins to occur within the battery.

Discharge time is basically the Ah or mAh rating divided by the current. Thecharge time depends on the batterychemistry and the charge current. For NiMh, for example,10% of the Ah rating for 10 hours