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					Originally Posted by  frizzen
					 
				 
				I don't know much about the 18650 cells, but you can build them into packs that way. 
 
If you solder all reds together, and all blacks together, you will have a 3p pack. It has single cell voltage, 3x the amps. 
 
If you solder a red to black, and another red to black, you'll have a 3s pack. It has 3x cell voltage, and single cell amps. 
			
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 The way I mentioned, if I did it that way, I'd only a 3.7v battery, if I understand correctly?