I never seriously looked at lithium batteries for the bike. I good AGM usually lasts me 3 or 4 years at least, and they cost 1/3 or less of what a lithium does. Other than the weight and size difference and the time they can sit idle, I just never saw the need for them. Great for power tools though. I've tried a few different AGM's but went back to Yuasa the last couple batteries.
