ValuePower-65 battery made in May 2018 for use in a 4.0 Jeep lasted about 15 months, just a few months past its 1-year replacement warranty. The Jeep drove about 10-12K miles during that time and has always been left outside, not garaged. Replaced it with an Everstart Value, which looks like the same thing. We'll see how this one do. It hasn't failed yet but the start has been getting weaker in this weather and the Jeep has only been driven for about 7K miles between Summer of 2019 and now. Maxx is probably more cost efficient.