I believe the A123's are Lithium Ion Nanophosphate, not Lithium Polymer. Their biggest feature is that they can be charged faster (3-4C, IIRC) and allow very high discharge rates (30C, with 60C burst), and are much more chemically stable than LiPos. There was a video on the 'net of an A123 cell punctured by a nail, with little effect (other than killing the cell, of course).
http://www.a123racing.com/html/technology.html On 5/30/08, Ed Anderson <[EMAIL PROTECTED]> wrote: > But why A123 vs. Lipo? Was it size, shape, cost or something else that made > these the cells of choice? RCSE-List facilities provided by Model Airplane News. Send "subscribe" and "unsubscribe" requests to [EMAIL PROTECTED] Please note that subscribe and unsubscribe messages must be sent in text only format with MIME turned off. Email sent from web based email such as Hotmail and AOL are generally NOT in text format