You might want to check (ie. take off, clean all contact points & ensure shiny metal to shiny metal contact; replace; & tighten properly) not only the battery terminals, but also the connections to the Starter itself and the main earth points on the frame - especially the earth point deep in the 'steering arm tunnel' behind the LH Front Wheel - the main earth cable from the battery is secured to the frame there, and that one in particular has been known to work loose on some Spyders, especially after changing a battery and moving the cables around a bit in the process! :lecturef_smilie:
While you're there and doing that, it might also pay to make sure that the metal lugs that're meant to be secured to the end of the cables so that they'll bolt to whatever
actually ARE secure on the end of the CABLE too!! I had an issue with the lug on the end of that main earth cable working loose on my 2013 Spyder, and I've recently seen a few other Spyders with similar problems... The lugs either never were secured properly to the cable ends, or maybe some movement in the cable/vibrations during use have caused them to work loose over time - I'm beginning to suspect the former rather than the latter, but either way, the end result is the same - owners will have a 'power failure' of some sort on their Spyders!! :banghead:
Just Sayin'