I know Impulse Lithium offers a 12v-60ah that I hear runs the troller all day. They do have the low temperature cut off and offer a 10yr warranty
I don't know about the cheaper batteries or the warranties they come with. There are so many things to consider when buying Lithiums, the case seal is one. If you get water intrusion it will kill the battery. I would go with a more reputable company
Looks like a lot of Pros run their products. Frank Talley, Lee Livesay, Randy Howell, Boyd Duckett, BMP and more.
I live by the saying, "you get what you pay for"
www.impulselithium.com. I believe their 60ah is $475 on the site