The day we get this manufactures to stick in a 20,000 cycle lithium iron battery is the day we get to say good bye to this utter annoyance in electrical systems where lead acid is such a poor choice as they don’t need high current draw.

Good line. I get it. Love it hate

The problem is similar. Engines can have a bad seal, a crankshaft not right. These get replaced.

Batteries as a hole don’t just fail. A cell goes bad. We don’t have easy methods to replace the one.