I have an X2 that I use for a trolling motor battery that I used in for my 225 Pro xs for a starting battery and it was great. I sold the boat and kept the battery and use it for a trolling battery for my Jon boat at the house. Great Battery! Mine came with a 4 year full replacement warranty. I was hoping that it would give out by the end of the 4th year, but no such luck. 5 years and still going strong.