Said goodbye to my stock Panasonic battery today.


Still works but it was noticeably weaker as its very easy to discharge it, on some cold days struggled to start and my horn started sounding a bit off. No point risking it crapping out on a really cold day even though I have a jump starter in the car. Its a bit of a heavy thing though with the water in it. The Costco battery I put in it seems less heavy...seems like unintentional weight savings.

Original battery, Car manufacturing date March 2012. I listen more intently now, and it is likely reaching end of life soon.