Each "s" stands for a cell. So a 3S battery is 3 cells @ 3.7 volts per cell or 11.1volts total. A 2S would be a 7.4 volt 2 cell battery. Since the total battery voltage is the additive of each cell they would have to be in series.
The bigger the cell is, the more ah the battery is rated. I have batteries from 1300mah to 3300mah. The more battery mah the longer I can fly.
The bigger the cell is, the more ah the battery is rated. I have batteries from 1300mah to 3300mah. The more battery mah the longer I can fly.
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