What say the forum? Looking at replacing the battery in my CBR1000RR. Considering a lithium as a quick search shows them at about the same price as a Yuasa lead acid type. Of course that will likely mean a charger capable of charging this type of battery. If you have charger input throw it in the thread. I have vaguely followed these the past few years but wasn't buying. I figure the weight loss may be a good thing for a litre bike. The prices and varieties have changed rapidly.