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					Originally Posted by  HarryT
					 
				 
				Do you have any reference to such research, Jack? I haven't come across that, and I'd be interested to learn more about it. 
			
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 Google it. We go through this stupid discussion once or twice a year. I found it when I was researching my Toyota Prius, which of course has a huge lithium battery. Toyota basically found that it would prolong battery life it they designed it to never fall below 50% charge, so they use a battery that is much larger than really needed so it can last longer.