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- | Depending on the design and chemistry of your lithium cell, you may see them sold under different nominal "voltages". For example, almost all lithium polymer batteries are **3.7V** or **4.2V **batteries. What this means is that the **maximum** voltage of the cell is **4.2v** and that the "nominal" (average" voltage is **3.7V**. As the battery is used, the voltage will drop lower and lower until the minimum which is around 3.0V. You should see the number **3.7V** written on the battery itself somewhere. | + | Depending on the design and chemistry of your lithium cell, you may see them sold under different nominal "voltages". For example, almost all lithium polymer batteries are **3.7V** or **4.2V **batteries. What this means is that the **maximum** voltage of the cell is **4.2v** and that the "nominal" (average) voltage is **3.7V**. As the battery is used, the voltage will drop lower and lower until the minimum which is around 3.0V. You should see the number **3.7V** written on the battery itself somewhere. |
{{ http://www.ladyada.net/images/lipoly/37v.jpg?nolink&455x439 |}} | {{ http://www.ladyada.net/images/lipoly/37v.jpg?nolink&455x439 |}} |