I was requested to share my experiences with LiOn batteries by a Buell Ulysses owner. My bike is a road and drag sportster 103 hp 10:5 to 1 compression.
My husband and I both run lithium ion batteries Shorai LiOn brand. We've been running them for four years. They come with a five year prorated warranty. They're about $50 more than a dealership lead acid battery. Last winter they started the bikes on the coldest day like they were new. It took 8.9 lbs off my 103 hp sportster and 13.9 lbs off my husband's 137 hp VRod. I absolutely would recommend replacing a stock battery with one!
My husband and I both run lithium ion batteries Shorai LiOn brand. We've been running them for four years. They come with a five year prorated warranty. They're about $50 more than a dealership lead acid battery. Last winter they started the bikes on the coldest day like they were new. It took 8.9 lbs off my 103 hp sportster and 13.9 lbs off my husband's 137 hp VRod. I absolutely would recommend replacing a stock battery with one!