At this threshold, the battery is charged to 95% state of charge.
The choice of the upper and lower threshold limits need to be chosen carefully because if the parameters are too close together then the charging will begin too early and it will operate close to float charging
If the parameters are chosen too far apart then the battery will discharge to an unacceptable low state of charge
Under a simulated solar day, the lower voltage threshold is not reached as the VRLA battery takes longer than twenty hours to drop to this threshold.
The rate of the voltage drop depends on the age of the battery; an older battery with a lower state of health will have a higher rate of self-discharge