get yourself a Motobatt, I got one from here:
http://www.stuff4bikes.co.uk/index.a...motobatt+sv650 a few years ago and it was the best battery that I've ever bought.
read many reviews before committing to purchase, the slightly larger version does also have the capacity to start a pickup truck (go look for the reviews). It's an AGM battery and will even fit a trumpet if you need it to in the future.
Chances are the RR death has caused the battery to die due to poor charging in the past.