The First Amendment, sometimes called Amendment 1, is the first amendment to the United States Constitution and is also one out of ten amendments in the Bill of Rights.
Replace the battery-Place the new battery where you just took the old battery out, with the positive and negative terminals on the correct sides. Connect all the screws, clamps or bars that may hold the battery in place. 3. Reconnect the positive terminal-Tighten the clamps using a wrench. Finally, you should check the alternator. 2  Some cars also have a battery meter, with the engine running, the alternator usually maintains a charge close to 13.8-14.2 volts in a properly functioning charging system.
The standard car battery in today's vehicles are rated at 12 volts. Each battery has six cells which are 2.1 volts each. A car battery is considered fully charged at 12.6 volts. When a battery drops voltage, even by a small amount, it makes a big difference. For instance, when a battery drops from 12.6 to 12.0 volts, its power drops from 100% to 25%! At 12.4 volts, a car battery is only 75% charged. At 12.2 volts, it's 50% charged.