Does the voltage of the Hi-Capacity battery need to match the voltage of the original battery?
While the voltage of the Hi-Capacity battery may not be identical to the original battery, the voltages must be within a reasonable range. In order to rate the voltage of a single cell, a voltage value between 3.0 and 4.2 must be picked. The voltage that is picked is called the “nominal” voltage, which means that it is for naming purposes only, whereas the actual voltage of the cell depends on the state of charge. Historically some manufacturers picked 3.6V while others picked 3.7V to name the cell. The functionality and performance of either cell is identical and cannot be differentiated by the device. The explanation above applies to a single Li-Ion cell in series. When a battery has two or more Li-Ion cells in series, the voltage is multiplied by the number of cells in series, as in the table below: Number of Li-Ion cells in series Nominal voltage Type of device 1 3.6V or 3.7V Cell phones and Digital cameras 2 7.2V or 7.4V Digital cameras and camcorders 3 10.8V or 11.1V Laptops 4 14
