I have had five bikes with Shorai batteries. Two years in my Gen 4. Never had a failure or issue. I use either the Shorai charger, or a Battery Tender designed to be used with LiFe (Lithium-Iron) batteries. Many riders aren't aware of the difference between LiFe and Lithium Ion, it is huge. Totally different chemistry.
If you live in a cold climate, forget LiFe batteries altogether because they don't like cold weather unless you want to learn the drill of turning on the headlight or other load to heat it up.
They will deplete over time with newer bikes that have a constant current draw. If I don't ride the ZX-10R for a few weeks it'll crank slow and be down a bit on charge.
If I had to do it again, I'd get the ABS battery for my non-ABS bike, it's still a big weight savings but way more CCA and AH capacity.
Also keep in mind the multiple threads showing that installation of a LiFe battery resolves issues with the steering damper ECU; they operate at a higher voltage than lead-acid.
Last edited by White Fang; 09-16-2017 at 04:10 PM.