if weight savings means little or nothing to you, then a Li battery is a waste of money. conversely speaking, if saving weight is important, then the Li battery is a cost effective way of doing so.
2014 BMW R1200GSW
2003 Aprilia Tuono Racing
2012 Vespa 300 Super
past: Ducatis, Aprilias, Moto Guzzis, a Husky, and some BMWs as well.