Quote:
Originally Posted by bigred5765
but your trying to compare lipo to lion cells, and there talking about cycles as in fully charged to fully flat, theres isn't real any time you would do this in racing, you would only be topping them up, as unlike nimh you should never store flat or fully discharge a lipo,and 500 cycles even if you did fully charge to fully flat them would be 125 race meetings,
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I agree with you
!
I still think charging to a lower voltage is beneficial to cycle life. Li-Ion aren't really different, only use a gel as the eletrolyte to make it modular, so I am led to believe they are the same in many charge-discharge aspects. In the Kokam experiments, when they want to show how good the life cycles can be, they charge it to 4.14v instead of 4.2v (according to the above page). They don't elaborate as to why.
I found this interesting reading:
http://www.modelflight.com.au/flight...life_cycle.htm
http://www.batteryuniversity.com/print-partone-5.htm
http://www.batteryuniversity.com/partone-12.htm
About my 4S Lipo experiment, the ESC didn't work properly when wheels in the air(Ok when on the tarmac, if only the tyres were not coming off due to centrifugal force
). So it sems like I really need to stay below 4V/cell