I am researching lightweight LiFePO4 batteries for about 30lb weight savings, or about 0.94% of the FL5 weight, much easier than loosing 30lb myself :-)
I know that I shouldn't replace a perfectly good battery to gain a few thousands of a second in acceleration, improved handling by a few...
Im looking to upgrade and save some weight with one of these lithium batteries but havent heard much about them. I found these guys and they said this is the replacement model...