Is there any weight advantage to a lithium battery that's as large as the lead-acid it replaces?One issue with lithium battery purchases is that some buyers go with the smallest battery they can, and then use foam inserts and such, to make the battery fit securely in the stock compartment. Smaller LiFEPo batteries typically have a similar CCA rating to the stock sized Lead/AGM batteries, so they are usually listed as suitable for use when cross referenced with the stock battery. But, the smaller LiFEPo batteries lack the amp-hour/Ah rating. The result is a LiFEPo battery that gives all of its Ah to just a few start up attempts, or drains too much due to accessories like aux lights, phone/gps charging, heated grips/gear, etc. When I shop for a LiFEPo, I look at the stock battery dimensions and polarity placement, then go for a physically same-sized LiFEPo battery with the most Ah I can find (CCA is generally high enough not to be a factor), and at a reasonable price. I also maintain them (occasionally) with a suitable charger. (Battery Tender Jr. Switchable, in my case). I've used WPS and BikeMaster LiFEPo batteries between my KTM, Ducati, Aprilia, and Honda, and never had an issue.