Yesterday, got my wife's and my car's engine bays detailed. Both came up looking like new! The battery decided to quit yesterday in her car and I checked the receipt and it was one month shy of the end of the 3yr warranty. Died at the right time! So I got it replaced. Unfortunately, the warranty expires with the end of the old battery and the new one isn't warranted. If we can get another 3yrs out of this, we're happy!