Today I did the normal minor maintenance on my 2018 Flex and the battery is tested weak. I feel its on its way out. My previous factory installed Motorcraft/Ford battery didn't last long either. While its still under warranty I don't want another Motorcraft battery that seems to fail within a year or two. What would you recomend as a good replacement battery? (I do live in the mojave desert if that matters) Are the Duralast Gold any good? Thanks.