Not fully, but these days come more than half charged, yes.
12.6 volts when fully charged.
Yes, all automobile batteries can be charged.
Yes, all batteries are fully charged when the leave the factory.
A healthy, fully charged car battery will eventually go dead just from sitting, but it takes a very long time.
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.
New batteries almost always come fully charged. If it was not then charge it with a battery charger and do not use your vehicle alternator to charge a dead battery. You may do harm to the alternator which is not built to charge a dead battery but is instead built to keep a good battery fully charged.
Car batteries come in different sizes and weights.Car batteries come in different sizes and weights.Car batteries come in different sizes and weights.Car batteries come in different sizes and weights.
It means that it has a low charge. Standard car batteries are at roughly 12.5v when fully charged. Most standard cars will have difficulty starting if the battery charge is less than 10v
No, car batteries use lead for both plates. When charged the positive plate becomes white lead oxide.
It is there to keep the battery fully charged.
12.7 volts
1.265