Never heard of a half battery. I have heard of half battery life, meaning the battery is half charged. The voltage of any battery is the same at half charge as it is at full charge.
A fully charged 12 volt automotive battery should have 12.68 volts.
Typical D cell batteries NiCad or otherwise are 1.2 volts.
The number of cells in a battery determine the battery's voltage. Different types of batteries have different cell voltages. The cell voltage is dependant on the reactive metals used. A typical car battery will have six cells. Because a typical cell voltage has a source voltage of approximately 2.0 volts, this makes a car battery produce a voltage of 12 volts.
No. You would only have half the voltage required as they are the same voltage.
Most batteries used in watches are one and one half volts 1.5v]
The batteries can be connected in parallel or in series. In parallel, good batteries of the same voltage will have a total voltage across them equal to the voltage across one of them. Those batteries in series will have a total voltage equal to the sum of the voltage of each of the batteries.
Batteries in parallel maintain constant voltage across the load rather in a series, so it is better to arrange the batteries in parallel Batteries in series deliver a higher voltage, batteries in parallel have longer life use.
depends on the voltage of the batteries.. four 12 volt car batteries would output 4x12 = 48 v
Batteries provide a voltage difference.
Batteries provide a voltage difference.
The voltage remains the same.
Assuming all of the individual batteries are the same voltage, if arranged in a parallel circuit the voltage is the same as any one battery. If arranged in a series circuit the voltage will be the sum (the total) of all of the batteries added together.