Hello, you are asking the typical float rate of deep cycle batteries. You also asked about battery abortion rate. I do not really get what you mean by abortion rate of batteries. Feel free to reply this and explain to us more on what you mean by that.
Meanwhile, what in the first place is the battery float voltage range?
The battery float voltage range is the particular voltage range a fully charged battery is maintained in order to remain fully charged over a period of time irrespective of the battery’s self discharge over time.
The battery float voltage range usually depends on the type of battery. Usually the float voltage range of lead acid batteries especially the typical flooded batteries is usually from 13.5V to 13.62V. It can still vary so you will have to consult the battery data sheet for the manufacturer’s figure.