I think competetion will bring the lithium battery prices down from where they started out. The cheaper batteries as with other lead acid batteries will sometimes fail. The high priced name brands have failures too. Having a dealer to support your purchase is more important than the name or manufacturer of the battery. I have one 100ah Ionic with bluetooth . No issues yet. Purchased from Central KY Sonar, Nicholasville KY. If I do have a problem, I got someone to go to. Support your local busineses. You may pay more but you will get more.