Between 12V-14.2V is recommended, however standard charging units will optimize their charge to your batteries needs.
12.6 volts when fully charged.
Yes, all automobile batteries can be charged.
An electric car needs to be charged until the indicator on the charger says the batteries are charged. It will depend on the amperage of the batteries, the way the charging mechanism works, and the percentage of discharge of the batteries.
Voltage is how much power the batteries have. I think....
depends on the voltage of the batteries.. four 12 volt car batteries would output 4x12 = 48 v
The charger needs to be set to charge for the voltage that the battery is designed to produce. Most car batteries are 12 volt batteries.
You cannot power a home with car batteries. Batteries are DC voltage. Your home operates on AC voltage. You could use a converter but the number of batteries required to operate an average home would be enormous.
the collective voltage of this cart is 48 volts . fully charged it will be anything up to 51 or 52 volts . If the voltage of your batteries is less than say 41 volts because they are very very low then your charger will not kick on. You will have to charge the batteries one at a time using a car battery charger. The golf cart charger you have will only turn on and charge when the batteries are above a certain voltage . You are obviously below that. Or you batteries are simply no good at all because they were dry for to long . Go to your local batteries plus store and have them check them for free.
For a standard "12 volt" battery, the voltage should be 12.6 to 12.8 while car is off, 13-14 while running. Some newer cars (e.g. recent model Hondas) have higher voltage batteries.
Nothing too exciting, assuming the battery voltage is the same, and all batteries are roughly fully charged (or equivalently charged). If the battery voltage is not the same, one battery will attempt to charge the other, causing excessive heating. The heating will be greater the greater voltage disparity that exists. In general, putting two AA batteries in parallel is fine. or two AAA, or two D, etc. It's when you try to mix batteries - like putting an AA in parallel with a car battery or a 9 volt battery.
No, car batteries use lead for both plates. When charged the positive plate becomes white lead oxide.
Car batteries are seldom charged by solar energy. Normally, they are charged by the engine of the car, which powers an alternator, providing electrical power.