2 volts
just check the voltage. if its below 12 volt then you have a dead cell. each battery has 6 cell ( 2 volts each cell.)
That depends on the battery. A car battery makes 12 volts. An AA cell battery makes 1.5 volts.
Each cell in a typical car battery has a little over 1.5 volts. Eight cells per battery equals the battery's total voltage.
Each cell of a modern lead-acid battery should have an average voltage of about 2 volts but, depending on the cell's condition and state of charge, the exact voltage at any time may be somewhere in a range from about 1.8 volts (when it is almost fully discharged) and 2.25 volts when it is fully charged.
Battery voltage / number of cells = cell voltage 12/6 = 2 volts cell voltage
Each cell of a modern lead-acid car battery should have an average voltage of about 2 volts but - depending on the cell's condition and its state of charge - the exact voltage at any time may be somewhere in a range from about 1.8 volts (when it is almost fully discharged) and up to 2.25 volts when it is fully charged.
Its called a battery because it is a group of cells. In the case of a conventional lead-acid battery each cell produces about 2 volts. To obtain 12 volts, 6 of these cells must be combined, forming a battery. Sometimes the term battery is a misnomer. In the case of 1.5v alkaline "batteries" they are technically just one cell.
A typical cell phone battery is around four volts, a car battery is twelve volts. That means an adapter is required.
2.2v when charged.
AnswerAccording to WikiPedia (http:/en.wikipedia.org/wiki/Rechargeable_battery), the nominal cell voltage of a Lead Acid wet-cell battery is 2.1 volts, this implies there are 6 cells in a 12 volt Lead Acid wet-cell battery.
A fully charged 12 volt battery will read about 12.6 volts, or 2.1 volts per cell.